The document discusses various techniques for summarizing code, changes, and test cases. It describes generating source code summaries to aid code comprehension and prevent maintenance costs. It also covers summarizing code changes to automatically generate commit messages and release notes. Finally, it discusses summarizing test cases to generate more readable test cases and evaluate their effectiveness with developers.
Supporting program comprehension with source code summarizationMasud Rahman
This document discusses research on automatically generating summaries of source code to help with program comprehension. It proposes using techniques like latent semantic indexing to extract important lexical and structural information from code, and generate summaries at different granularity levels like class or method. Experiments on an open source project showed that incorporating structural elements like method names into automatic summaries improved their quality compared to only using term frequencies. Future work could develop better techniques to account for structural information when creating code summaries.
Supporting program comprehension with source code summarization icse nier 2010Sonia Haiduc
One of the main challenges faced by today’s developers is keeping up with the staggering amount of source code that needs to be read and understood. In order to help developers with this problem and reduce the costs associated with it, one solution is to use simple textual descriptions of source code entities that developers can grasp easily, while capturing the code semantics precisely. We propose an approach to automatically determine such descriptions, based on automated text summarization technology and structural information.
Dear students get fully solved assignments
Send your semester & Specialization name to our mail id :
“ help.mbaassignments@gmail.com ”
or
Call us at : 08263069601
(Prefer mailing. Call in emergency )
IRJET - Pseudocode to Python Translation using Machine LearningIRJET Journal
This document describes a system that translates pseudocode written in natural language into executable Python code. It uses recurrent neural networks with sequence-to-sequence translation to first convert the pseudocode into an intermediate XML representation, and then recursively parses that XML to produce the final Python code. The system aims to help students learn programming by allowing them to test algorithms written in pseudocode. It was implemented using Keras and trained on a dataset containing pseudocode statements and their Python translations.
This document discusses and compares two formal specification styles: model-oriented and process algebra approaches. It provides an overview of different formal specification languages, including model-oriented languages like B, VDM, and Z, as well as process algebra languages like CSP and CCS. The document analyzes these approaches based on criteria like abstraction, ambiguity, consistency, and concurrency to evaluate their strengths and weaknesses for specifying systems formally.
This document compares model-oriented and process algebra approaches to formal specification languages. It discusses key formal specification styles including model-oriented, algebraic, transition-based, process algebra, logic-based, and reactive approaches. It then evaluates several model-oriented (Z, VDM, B) and process algebra (CSP, CCS) languages based on criteria like abstraction, ambiguity, consistency, concurrency, readability and reusability. Finally, it discusses the B method and its tool support, comparing it to related techniques like Event-B, VDM, TLA, ASM and Z. The document provides an overview of different formal specification approaches and evaluates some example languages in these categories.
GENERIC CODE CLONING METHOD FOR DETECTION OF CLONE CODE IN SOFTWARE DEVELOPMENT IAEME Publication
The major part of risk the development of software orprograms is existence ofduplicate code that can affect the software maintainability. The main aim of Clone
identification technique is to search and detect the parts of the software code which is
identical. In the passed there are various techniques that are used to identify andreflect the code identity and code fragments.Code cloning reduces the time and effort of the softwaredeveloper but it alsodecreases the quality of the software like readability, changeability and increasesmaintainability. So, code clone has to be detected to reducethe cost of maintenance tosome extent. In this paper, a new Generic technique is purposed to detect code clone
from various input source codes (from web, disk and etc.,) by segmenting the code intonumber of sub-programs or modules or functions. I propose a technique that candetect 1-type,2type, 3-type and 4-type clones efficiently.
Mining Code Examples with Descriptive Text from Software ArtifactsPreetha Chatterjee
The document describes an exploratory study conducted to understand the types of information provided about code snippets embedded in different software-related documents. The study analyzed 60 documents across 12 categories and identified 17 labels and sub-labels for annotating the information about code snippets. Research papers were found to contain the most code snippets on average (8.6 per paper) with the longest descriptions (439 lines of text on average). The study aims to help develop techniques for mining relevant information from various document types to assist with software engineering tasks.
Supporting program comprehension with source code summarizationMasud Rahman
This document discusses research on automatically generating summaries of source code to help with program comprehension. It proposes using techniques like latent semantic indexing to extract important lexical and structural information from code, and generate summaries at different granularity levels like class or method. Experiments on an open source project showed that incorporating structural elements like method names into automatic summaries improved their quality compared to only using term frequencies. Future work could develop better techniques to account for structural information when creating code summaries.
Supporting program comprehension with source code summarization icse nier 2010Sonia Haiduc
One of the main challenges faced by today’s developers is keeping up with the staggering amount of source code that needs to be read and understood. In order to help developers with this problem and reduce the costs associated with it, one solution is to use simple textual descriptions of source code entities that developers can grasp easily, while capturing the code semantics precisely. We propose an approach to automatically determine such descriptions, based on automated text summarization technology and structural information.
Dear students get fully solved assignments
Send your semester & Specialization name to our mail id :
“ help.mbaassignments@gmail.com ”
or
Call us at : 08263069601
(Prefer mailing. Call in emergency )
IRJET - Pseudocode to Python Translation using Machine LearningIRJET Journal
This document describes a system that translates pseudocode written in natural language into executable Python code. It uses recurrent neural networks with sequence-to-sequence translation to first convert the pseudocode into an intermediate XML representation, and then recursively parses that XML to produce the final Python code. The system aims to help students learn programming by allowing them to test algorithms written in pseudocode. It was implemented using Keras and trained on a dataset containing pseudocode statements and their Python translations.
This document discusses and compares two formal specification styles: model-oriented and process algebra approaches. It provides an overview of different formal specification languages, including model-oriented languages like B, VDM, and Z, as well as process algebra languages like CSP and CCS. The document analyzes these approaches based on criteria like abstraction, ambiguity, consistency, and concurrency to evaluate their strengths and weaknesses for specifying systems formally.
This document compares model-oriented and process algebra approaches to formal specification languages. It discusses key formal specification styles including model-oriented, algebraic, transition-based, process algebra, logic-based, and reactive approaches. It then evaluates several model-oriented (Z, VDM, B) and process algebra (CSP, CCS) languages based on criteria like abstraction, ambiguity, consistency, concurrency, readability and reusability. Finally, it discusses the B method and its tool support, comparing it to related techniques like Event-B, VDM, TLA, ASM and Z. The document provides an overview of different formal specification approaches and evaluates some example languages in these categories.
GENERIC CODE CLONING METHOD FOR DETECTION OF CLONE CODE IN SOFTWARE DEVELOPMENT IAEME Publication
The major part of risk the development of software orprograms is existence ofduplicate code that can affect the software maintainability. The main aim of Clone
identification technique is to search and detect the parts of the software code which is
identical. In the passed there are various techniques that are used to identify andreflect the code identity and code fragments.Code cloning reduces the time and effort of the softwaredeveloper but it alsodecreases the quality of the software like readability, changeability and increasesmaintainability. So, code clone has to be detected to reducethe cost of maintenance tosome extent. In this paper, a new Generic technique is purposed to detect code clone
from various input source codes (from web, disk and etc.,) by segmenting the code intonumber of sub-programs or modules or functions. I propose a technique that candetect 1-type,2type, 3-type and 4-type clones efficiently.
Mining Code Examples with Descriptive Text from Software ArtifactsPreetha Chatterjee
The document describes an exploratory study conducted to understand the types of information provided about code snippets embedded in different software-related documents. The study analyzed 60 documents across 12 categories and identified 17 labels and sub-labels for annotating the information about code snippets. Research papers were found to contain the most code snippets on average (8.6 per paper) with the longest descriptions (439 lines of text on average). The study aims to help develop techniques for mining relevant information from various document types to assist with software engineering tasks.
The document outlines the program structure for the second year of engineering at the University of Mumbai for semesters 3 and 4. It includes details of the courses, teaching scheme, examination scheme, labs, and syllabus. Some of the key courses include Data Structures, Database Management Systems, Principles of Communication, and Paradigms and Computer Programming Fundamentals. The syllabus covers topics like Java fundamentals, OOP concepts, inheritance, packages, interfaces, exception handling, multithreading, I/O streams, and GUI programming using AWT and Swing. Students will complete labs related to the coursework and a mini project to develop a front-end or backend application using Java.
Frequently asked tcs technical interview questions and answersnishajj
This document provides examples of technical interview questions that may be asked during the interview process for a job at TCS. It outlines the different types of interviews, such as campus interviews which can last 45 minutes to an hour and involve both behavioral and technical questions. Phone interviews similarly assess communication skills and technical abilities. Sample technical questions cover topics like programming languages, data structures, object-oriented programming, and more. Common answers are provided for questions about the differences between C and Java, function declarations, storage classes in C, and other concepts.
Finding Help with Programming Errors: An Exploratory Study of Novice Software...Preetha Chatterjee
Monthly, 50 million users visit Stack Overflow, a popular Q&A forum used by software developers, to share and gather knowledge and help with coding problems. Although Q&A forums serve as a good resource for seeking help from developers beyond the local team, the abundance of information can cause developers, especially novice software engineers, to spend considerable time in identifying relevant answers and suitable suggested fixes.
This exploratory study aims to understand how novice software engineers direct their efforts and what kinds of information they focus on within a post selected from the results returned in response to a search query on Stack Overflow. The results can be leveraged to improve the Q&A forum interface, guide tools for mining forums, and potentially improve granularity of traceability mappings involving forum posts. We qualitatively analyze the novice software engineers’ perceptions from a survey as well as their annotations of a set of Stack Overflow posts. Our results indicate that novice software engineers pay attention to only 27% of code and 15-21% of text in a Stack Overflow post to understand and determine how to apply the relevant information to their context. Our results also discern the kinds of information prominent in that focus.
This paper presents a natural language processing based automated system called DrawPlus for generating UML diagrams, user scenarios and test cases after analyzing the given business requirement specification which is written in natural language. The DrawPlus is presented for analyzing the natural languages and extracting the relative and required information from the given business requirement Specification by the user. Basically user writes the requirements specifications in simple English and the designed system has conspicuous ability to analyze the given requirement specification by using some of the core natural language processing techniques with our own well defined algorithms. After compound analysis and extraction of associated information, the DrawPlus system draws use case diagram, User scenarios and system level high level test case description. The DrawPlus provides the more convenient and reliable way of generating use case, user scenarios and test cases in a way reducing the time and cost of software development process while accelerating the 70 of works in Software design and Testing phase Janani Tharmaseelan ""Cohesive Software Design"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-3 , April 2019, URL: https://www.ijtsrd.com/papers/ijtsrd22900.pdf
Paper URL: https://www.ijtsrd.com/computer-science/other/22900/cohesive-software-design/janani-tharmaseelan
Frequently asked tcs technical interview questions and answersnishajj
This document provides information about the interview process and sample technical questions for a job interview at TCS, an IT company. It describes the different types of interviews - campus interviews which are 45-60 minutes with one or more interviewers focusing on communication skills and background, and phone interviews which assess similar areas. It then provides examples of 20 technical questions that may be asked, covering topics like programming languages, data structures, OOP concepts, and more. Sample answers are provided for some of the questions.
The main control structures in C++ are:
1. Conditional structures:
- if statement - Executes a statement if a condition is true.
- if-else statement - Executes one statement if a condition is true and another statement if it is false.
- switch statement - Allows a variable to be tested for equality against multiple case values.
2. Looping structures:
- while loop - Executes a statement or block of code repeatedly as long as a condition is true.
- do-while loop - Similar to a while loop but the condition is checked at the end of the loop.
- for loop - Executes a statement or block of code repeatedly for a known number of times.
A Novel Approach for Rule Based Translation of English to Marathiaciijournal
This paper presents a design for rule-based machine translation system for English to Marathi language pair. The machine translation system will take input script as English sentence and parse with the help of Stanford parser. The Stanford parser will be used for main purposes on the source side processing, in the machine translation system. English to Marathi Bilingual dictionary is going to be created. The system will take the parsed output and separate the source text word by word and searches for their corresponding target words in the bilingual dictionary. The hand coded rules are written for Marathi inflections and also reordering rules are there. After applying the reordering rules, English sentence will be syntactically reordered to suit Marathi language
This document proposes a new metric for measuring code readability and compares it to existing metrics. It describes collecting rules for readability from software engineers and developing a formula that incorporates these rules. A prototype application was created to apply the new metric and existing metrics (ARI, FOG, SMOG) to code samples. The results of the new metric were compared to readability percentages provided by 50 software engineers for the same samples, and were found to closely match. The new metric provides an automated way to measure code readability.
Extracting Archival-Quality Information from Software-Related ChatsPreetha Chatterjee
Software developers are increasingly having conversations about software development via online chat services. Many of those chat communications contain valuable information, such as code descriptions, good programming practices, and causes of common errors/exceptions. However, the nature of chat community content is transient, as opposed to the archival nature of other developer communications such as email, bug reports and Q&A forums. As a result, important information and advice are lost over time.
The focus of this dissertation is Extracting Archival Information from Software-Related Chats, specifically to (1) automatically identify conversations which contain archival-quality information, (2) accurately reduce the granularity of the information reported as archival information, and (3) conduct a case study to investigate how archival quality information extracted from chats compare to related posts in Q&A forums. Archiving knowledge from developer chats that could be used potentially in several applications such as: creating a new archival mechanism available to a given chat community, augmenting Q&A forums, or facilitating the mining of specific information and improving software maintenance tools.
Exploratory Study of Slack Q&A Chats as a Mining Source for Software Engineer...Preetha Chatterjee
The document describes an exploratory study of mining information from Slack Q&A chat logs to support software engineering tools. The researchers analyzed conversations from several Slack communities to address how prevalent useful information is for tools (RQ1) and what challenges automatic mining faces (RQ2). Results found that while Slack contains similar information as Stack Overflow, identifying accepted answers is difficult. Future work is proposed to link Slack and Stack Overflow and mine conversations for insights.
The document provides information about an assignment for the subject Programming in C for the first semester of the BCA program. It includes 6 questions related to C programming concepts like operators, loops, variables, structures, macros, and file handling functions. Students are instructed to send their semester and specialization details to a provided email address or call a phone number to get fully solved assignments.
Supporting software documentation with source code summarization Ra'Fat Al-Msie'deen
Source code summarization is a process of generating summaries that describe software code, the majority of source code summarization usually generated manually, where the summaries are written by software developers. Recently, new automated approaches are becoming more useful. These approaches have been found to be effective in some cases. The main weaknesses of these approaches are that they never exploit code dependencies and summarize either the software classes or methods but not both. This paper proposes a source code summarization approach (Suncode) that produces a short description for each class and method in the software system. To validate the approach, it has been applied to several case studies. Moreover, the generated summaries are compared to summaries that written by human experts and to summaries that written by a state-of-the-art solution. Results of this paper found that Suncode summaries provide better information about code dependencies comparing with other studies. In addition, Suncode summaries can improve and support the current software documentation. The results found that manually written summaries were more precise and short as well.
Python Certification course teach high level programming language, the python platform handle multiple programming paradigms including object oriented, numeric datatypes, string operations, control flow and syntax, for loop, sys, math, time modules, regular expression etc python is scripting such as language Ruby, PHP and this programming language are using for Business analytics, Artificial Intelligent, Machine learning and much more.
This document provides information on the Data Structure Lab course including teaching scheme, examination scheme, objectives, outcomes, prerequisites, hardware/software requirements, syllabus, and references. The key details are:
- The course is 1 credit with 2 hours of practical sessions per week. Assessment includes an internal test and an end semester exam worth 50 marks total.
- The lab aims to teach fundamental data structures like stacks, queues, linked lists, trees, and graphs and their applications. Students will learn to implement various operations and solve real-world problems.
- On completion, students will be able to understand and apply concepts of data structures, implement basic and advanced trees, use graphs, and apply searching, hashing
Overlapping optimization with parsing through metagrammarsIAEME Publication
This document describes techniques for improving the performance of a meta framework developed by combining C++ and Java language segments. The meta framework identifies and parses source code containing C++ and Java statements using a metagrammar. Bytecodes are generated from the abstract syntax tree and optimized using techniques associated with the metagrammar, such as constant propagation. Constant propagation identifies constant values and replaces variables with those values to simplify expressions and reduce unnecessary computations. Other optimizations discussed include function inlining, exception handling, and eliminating unreachable code through constant folding. The goal is to develop an optimized meta framework that generates efficient bytecodes for hybrid C++ and Java source code.
Dear students get fully solved assignments by professionals
Send your semester & Specialization name to our mail id :
stuffstudy5@gmail.com
or
call us at : 098153-33456
130817 latifa guerrouj - context-aware source code vocabulary normalization...Ptidej Team
This document summarizes the contributions of Latifa Guerrouj's PhD thesis on context-aware source code vocabulary normalization. The thesis introduced two context-aware approaches for vocabulary normalization: TIDIER and TRIS. TIDIER is inspired by speech recognition and uses context-aware dictionaries and hill climbing to normalize identifiers. Experiments showed TIDIER outperformed previous approaches and correctly mapped 48% of abbreviations. TRIS treats normalization as an optimization problem to minimize a cost function. Experiments found TRIS had higher accuracy than state-of-the-art approaches like CamelCase and Samurai, with a medium to large effect size on C code.
The document presents an approach called Convolutional Analysis of code Metrics Evolution (CAME) that uses a convolutional neural network to detect anti-patterns by analyzing the historical evolution of source code metrics at the class level. An evaluation on 7 open-source systems shows that considering longer histories of metrics improves detection performance and that CAME outperforms other machine learning and anti-pattern detection techniques in terms of precision, recall, and F-measure.
SBST 2015 - 3rd Tool Competition for Java Junit test ToolsTanja Vos
This document describes the 3rd competition for automated unit testing tools, which evaluates tools' abilities to generate JUnit tests for unknown Java classes based on various coverage and efficiency metrics. Several tools participated including EvoSuite, GRT, and Randoop, with tests run across 63 classes from various open source projects. The competition aims to improve tools by comparing different testing approaches and provide insights for future research.
Sentiment analysis software uses natural language processing and artificial intelligence to analyze text such as reviews and identify whether the opinions and sentiments expressed are positive or negative. It can help businesses understand customer perceptions of products and brands. While sentiment analysis works reasonably well for classifying simple positive and negative sentiments, it faces challenges in dealing with ambiguity and nuance in human language. The accuracy of sentiment analysis depends on factors such as the complexity of the language analyzed and how finely sentiments are classified.
This document contains statistics about different countries' performance in SOGA, GCDP ICX, GCDP OGX, GIP ICX, and GIP OGX programs. It includes the number of raises, matches, and realizes for each country and asks the reader to make inferences from the data. Some of the questions asked are about Brazil's raise to realize ratio, why India is showing a constant dip, what's wrong with Brazil, and why Greece does less exchanges. The overall document is asking the reader to analyze the statistics and metrics provided to understand performance trends and differences between countries.
The document reports on program performance metrics with targets and achievements for 2014-2015. It shows the number of current matches, realizations, and achieved percentages for different programs, as well as targets and achievements for bank fixed deposits. Overall program performance was below most targets set for the period.
The document outlines the program structure for the second year of engineering at the University of Mumbai for semesters 3 and 4. It includes details of the courses, teaching scheme, examination scheme, labs, and syllabus. Some of the key courses include Data Structures, Database Management Systems, Principles of Communication, and Paradigms and Computer Programming Fundamentals. The syllabus covers topics like Java fundamentals, OOP concepts, inheritance, packages, interfaces, exception handling, multithreading, I/O streams, and GUI programming using AWT and Swing. Students will complete labs related to the coursework and a mini project to develop a front-end or backend application using Java.
Frequently asked tcs technical interview questions and answersnishajj
This document provides examples of technical interview questions that may be asked during the interview process for a job at TCS. It outlines the different types of interviews, such as campus interviews which can last 45 minutes to an hour and involve both behavioral and technical questions. Phone interviews similarly assess communication skills and technical abilities. Sample technical questions cover topics like programming languages, data structures, object-oriented programming, and more. Common answers are provided for questions about the differences between C and Java, function declarations, storage classes in C, and other concepts.
Finding Help with Programming Errors: An Exploratory Study of Novice Software...Preetha Chatterjee
Monthly, 50 million users visit Stack Overflow, a popular Q&A forum used by software developers, to share and gather knowledge and help with coding problems. Although Q&A forums serve as a good resource for seeking help from developers beyond the local team, the abundance of information can cause developers, especially novice software engineers, to spend considerable time in identifying relevant answers and suitable suggested fixes.
This exploratory study aims to understand how novice software engineers direct their efforts and what kinds of information they focus on within a post selected from the results returned in response to a search query on Stack Overflow. The results can be leveraged to improve the Q&A forum interface, guide tools for mining forums, and potentially improve granularity of traceability mappings involving forum posts. We qualitatively analyze the novice software engineers’ perceptions from a survey as well as their annotations of a set of Stack Overflow posts. Our results indicate that novice software engineers pay attention to only 27% of code and 15-21% of text in a Stack Overflow post to understand and determine how to apply the relevant information to their context. Our results also discern the kinds of information prominent in that focus.
This paper presents a natural language processing based automated system called DrawPlus for generating UML diagrams, user scenarios and test cases after analyzing the given business requirement specification which is written in natural language. The DrawPlus is presented for analyzing the natural languages and extracting the relative and required information from the given business requirement Specification by the user. Basically user writes the requirements specifications in simple English and the designed system has conspicuous ability to analyze the given requirement specification by using some of the core natural language processing techniques with our own well defined algorithms. After compound analysis and extraction of associated information, the DrawPlus system draws use case diagram, User scenarios and system level high level test case description. The DrawPlus provides the more convenient and reliable way of generating use case, user scenarios and test cases in a way reducing the time and cost of software development process while accelerating the 70 of works in Software design and Testing phase Janani Tharmaseelan ""Cohesive Software Design"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-3 , April 2019, URL: https://www.ijtsrd.com/papers/ijtsrd22900.pdf
Paper URL: https://www.ijtsrd.com/computer-science/other/22900/cohesive-software-design/janani-tharmaseelan
Frequently asked tcs technical interview questions and answersnishajj
This document provides information about the interview process and sample technical questions for a job interview at TCS, an IT company. It describes the different types of interviews - campus interviews which are 45-60 minutes with one or more interviewers focusing on communication skills and background, and phone interviews which assess similar areas. It then provides examples of 20 technical questions that may be asked, covering topics like programming languages, data structures, OOP concepts, and more. Sample answers are provided for some of the questions.
The main control structures in C++ are:
1. Conditional structures:
- if statement - Executes a statement if a condition is true.
- if-else statement - Executes one statement if a condition is true and another statement if it is false.
- switch statement - Allows a variable to be tested for equality against multiple case values.
2. Looping structures:
- while loop - Executes a statement or block of code repeatedly as long as a condition is true.
- do-while loop - Similar to a while loop but the condition is checked at the end of the loop.
- for loop - Executes a statement or block of code repeatedly for a known number of times.
A Novel Approach for Rule Based Translation of English to Marathiaciijournal
This paper presents a design for rule-based machine translation system for English to Marathi language pair. The machine translation system will take input script as English sentence and parse with the help of Stanford parser. The Stanford parser will be used for main purposes on the source side processing, in the machine translation system. English to Marathi Bilingual dictionary is going to be created. The system will take the parsed output and separate the source text word by word and searches for their corresponding target words in the bilingual dictionary. The hand coded rules are written for Marathi inflections and also reordering rules are there. After applying the reordering rules, English sentence will be syntactically reordered to suit Marathi language
This document proposes a new metric for measuring code readability and compares it to existing metrics. It describes collecting rules for readability from software engineers and developing a formula that incorporates these rules. A prototype application was created to apply the new metric and existing metrics (ARI, FOG, SMOG) to code samples. The results of the new metric were compared to readability percentages provided by 50 software engineers for the same samples, and were found to closely match. The new metric provides an automated way to measure code readability.
Extracting Archival-Quality Information from Software-Related ChatsPreetha Chatterjee
Software developers are increasingly having conversations about software development via online chat services. Many of those chat communications contain valuable information, such as code descriptions, good programming practices, and causes of common errors/exceptions. However, the nature of chat community content is transient, as opposed to the archival nature of other developer communications such as email, bug reports and Q&A forums. As a result, important information and advice are lost over time.
The focus of this dissertation is Extracting Archival Information from Software-Related Chats, specifically to (1) automatically identify conversations which contain archival-quality information, (2) accurately reduce the granularity of the information reported as archival information, and (3) conduct a case study to investigate how archival quality information extracted from chats compare to related posts in Q&A forums. Archiving knowledge from developer chats that could be used potentially in several applications such as: creating a new archival mechanism available to a given chat community, augmenting Q&A forums, or facilitating the mining of specific information and improving software maintenance tools.
Exploratory Study of Slack Q&A Chats as a Mining Source for Software Engineer...Preetha Chatterjee
The document describes an exploratory study of mining information from Slack Q&A chat logs to support software engineering tools. The researchers analyzed conversations from several Slack communities to address how prevalent useful information is for tools (RQ1) and what challenges automatic mining faces (RQ2). Results found that while Slack contains similar information as Stack Overflow, identifying accepted answers is difficult. Future work is proposed to link Slack and Stack Overflow and mine conversations for insights.
The document provides information about an assignment for the subject Programming in C for the first semester of the BCA program. It includes 6 questions related to C programming concepts like operators, loops, variables, structures, macros, and file handling functions. Students are instructed to send their semester and specialization details to a provided email address or call a phone number to get fully solved assignments.
Supporting software documentation with source code summarization Ra'Fat Al-Msie'deen
Source code summarization is a process of generating summaries that describe software code, the majority of source code summarization usually generated manually, where the summaries are written by software developers. Recently, new automated approaches are becoming more useful. These approaches have been found to be effective in some cases. The main weaknesses of these approaches are that they never exploit code dependencies and summarize either the software classes or methods but not both. This paper proposes a source code summarization approach (Suncode) that produces a short description for each class and method in the software system. To validate the approach, it has been applied to several case studies. Moreover, the generated summaries are compared to summaries that written by human experts and to summaries that written by a state-of-the-art solution. Results of this paper found that Suncode summaries provide better information about code dependencies comparing with other studies. In addition, Suncode summaries can improve and support the current software documentation. The results found that manually written summaries were more precise and short as well.
Python Certification course teach high level programming language, the python platform handle multiple programming paradigms including object oriented, numeric datatypes, string operations, control flow and syntax, for loop, sys, math, time modules, regular expression etc python is scripting such as language Ruby, PHP and this programming language are using for Business analytics, Artificial Intelligent, Machine learning and much more.
This document provides information on the Data Structure Lab course including teaching scheme, examination scheme, objectives, outcomes, prerequisites, hardware/software requirements, syllabus, and references. The key details are:
- The course is 1 credit with 2 hours of practical sessions per week. Assessment includes an internal test and an end semester exam worth 50 marks total.
- The lab aims to teach fundamental data structures like stacks, queues, linked lists, trees, and graphs and their applications. Students will learn to implement various operations and solve real-world problems.
- On completion, students will be able to understand and apply concepts of data structures, implement basic and advanced trees, use graphs, and apply searching, hashing
Overlapping optimization with parsing through metagrammarsIAEME Publication
This document describes techniques for improving the performance of a meta framework developed by combining C++ and Java language segments. The meta framework identifies and parses source code containing C++ and Java statements using a metagrammar. Bytecodes are generated from the abstract syntax tree and optimized using techniques associated with the metagrammar, such as constant propagation. Constant propagation identifies constant values and replaces variables with those values to simplify expressions and reduce unnecessary computations. Other optimizations discussed include function inlining, exception handling, and eliminating unreachable code through constant folding. The goal is to develop an optimized meta framework that generates efficient bytecodes for hybrid C++ and Java source code.
Dear students get fully solved assignments by professionals
Send your semester & Specialization name to our mail id :
stuffstudy5@gmail.com
or
call us at : 098153-33456
130817 latifa guerrouj - context-aware source code vocabulary normalization...Ptidej Team
This document summarizes the contributions of Latifa Guerrouj's PhD thesis on context-aware source code vocabulary normalization. The thesis introduced two context-aware approaches for vocabulary normalization: TIDIER and TRIS. TIDIER is inspired by speech recognition and uses context-aware dictionaries and hill climbing to normalize identifiers. Experiments showed TIDIER outperformed previous approaches and correctly mapped 48% of abbreviations. TRIS treats normalization as an optimization problem to minimize a cost function. Experiments found TRIS had higher accuracy than state-of-the-art approaches like CamelCase and Samurai, with a medium to large effect size on C code.
The document presents an approach called Convolutional Analysis of code Metrics Evolution (CAME) that uses a convolutional neural network to detect anti-patterns by analyzing the historical evolution of source code metrics at the class level. An evaluation on 7 open-source systems shows that considering longer histories of metrics improves detection performance and that CAME outperforms other machine learning and anti-pattern detection techniques in terms of precision, recall, and F-measure.
SBST 2015 - 3rd Tool Competition for Java Junit test ToolsTanja Vos
This document describes the 3rd competition for automated unit testing tools, which evaluates tools' abilities to generate JUnit tests for unknown Java classes based on various coverage and efficiency metrics. Several tools participated including EvoSuite, GRT, and Randoop, with tests run across 63 classes from various open source projects. The competition aims to improve tools by comparing different testing approaches and provide insights for future research.
Sentiment analysis software uses natural language processing and artificial intelligence to analyze text such as reviews and identify whether the opinions and sentiments expressed are positive or negative. It can help businesses understand customer perceptions of products and brands. While sentiment analysis works reasonably well for classifying simple positive and negative sentiments, it faces challenges in dealing with ambiguity and nuance in human language. The accuracy of sentiment analysis depends on factors such as the complexity of the language analyzed and how finely sentiments are classified.
This document contains statistics about different countries' performance in SOGA, GCDP ICX, GCDP OGX, GIP ICX, and GIP OGX programs. It includes the number of raises, matches, and realizes for each country and asks the reader to make inferences from the data. Some of the questions asked are about Brazil's raise to realize ratio, why India is showing a constant dip, what's wrong with Brazil, and why Greece does less exchanges. The overall document is asking the reader to analyze the statistics and metrics provided to understand performance trends and differences between countries.
The document reports on program performance metrics with targets and achievements for 2014-2015. It shows the number of current matches, realizations, and achieved percentages for different programs, as well as targets and achievements for bank fixed deposits. Overall program performance was below most targets set for the period.
This presentation provides an overview of basic finance concepts including income sheets, balance sheets, and cash flow monitoring. It explains that an income sheet shows a company's profits and losses, a balance sheet shows the company's assets and liabilities, and a cash flow statement shows where a company's money comes from and goes. It also outlines steps for developing a budget, including setting goals, defining the budget's scope, quantifying assumptions, and building the budget. Tips are provided for top-down and bottom-up budgeting approaches.
The document provides a financial summary and analysis of various programs as of July 2014. It notes the current bank balance and fixed deposits. Analyses of the iGCDP, oGCDP, iGIP, and oGIP programs are presented, highlighting realization gaps, cash flows, receivables, and one program achieving targets. Business development investments and achievements against targets are summarized. Next steps discussed include alumni engagement, realizing peak revenues, learning programs expenses, and revised finance policies.
The document summarizes financial activities and updates for July, including paying the first installment of 50,000 INR for an unstated purpose. It provides details on expenses like office rent, quality checks, and alumni events. Receivables are listed for different programs. The financial statement as of July 26 notes a bank balance of 2.94 lakhs and fixed deposit of 8.04 lakhs. Plans for August include focusing on enrollments, alumni relations, and recruitment.
La persona normalmente come cereales para el desayuno porque son sanos, pero esta mañana comió tostadas con mermelada porque son dulces y ricas. Ayer por la noche tomó pollo con patatas fritas para la cena, que es delicioso. Bebió un café en el desayuno y a veces bebe limonada o coca cola para la comida. Anoche cenó un filete con ensalada.
The document outlines a student's process of creating a motion graphic fly through of a cinema for their E6 project over several weeks. It details the initial research conducted on radio station stings and local stations. Ideas were generated by sketching designs. The storyboard and production began with creating the cinema room walls and floors. Additional details like chairs, a projector room, and screen were added. Post-production involved rendering, editing in Premiere Pro to fit the 30 second timeframe, and adding sound and single frame images. The final video was uploaded to YouTube and the student's blog along with an evaluation.
This document provides guidance for software testing projects at the California Institute of Technology's Information Management Systems & Services (IMSS). It outlines the philosophy, goals, roles and responsibilities for testing. The testing strategy describes the stages of the testing lifecycle including preparation, unit testing, integration testing, system testing and user acceptance testing. Sample test strategies are provided for upgrading Oracle software and testing a data warehouse. The document also describes testing processes, procedures, documentation requirements and the testing environment.
This document summarizes the marketing and public relations efforts of AIESEC in Hyderabad in 2013. It describes their growth on social media platforms, campaigns run including those to boost recruitment and raise awareness. It details their community outreach through youth empowerment seminars, events, press conferences, and media coverage. Charts show their contributions to educational and professional development opportunities increased from 2012 levels, with 58 opportunities gained compared to 20 previously. The year is deemed most progressive due to expanded social media presence, media and PR outreach, on-ground activities, youth seminars, and external partnerships.
The document summarizes the performance of "TheAviator" MLM in the previous quarter, noting what worked well (initial culture, Q2 MLM, correct marketing tools, product repackaging) and what didn't (Q1 MLM, lack of raising drive, not enough forms, low capitalization of tools and events, low member culture and connection). It provides details on member retention, achievements against national targets, current targets, and plans going forward such as implementing teams, feedback systems, and better tool utilization.
This document provides instructions for how to search for and contact people using GIS. It tells the user to log in, view the dashboard, click on Teams, search for a name or directly message them by clicking on their icon. It then explains how to start a new conversation by clicking "New conversation" and adding a person by clicking the "+" sign. The document challenges the user to search for and message 10 people from different entities on GIS and report back their names.
The document describes a classroom observation of a Grade 5 science lesson taught by Ms. Stella. It notes that the teacher engaged students by asking stimulating questions, connecting lessons to students' prior knowledge and imagination, and motivating participation through feedback and rewards. Students responded positively overall, though some were distracted at times. The teacher demonstrated strong classroom management skills and passion for teaching to keep students engaged throughout the lesson.
AIESEC is a global youth organization that aims to engage and develop every young person in the world. It has a growing physical and virtual reach, making it a credible and diverse global youth voice. AIESEC is recognized as the first choice partner for its ability to develop responsible and entrepreneurial leadership. The organization empowers members to have a high quality experience and create a positive impact on society through a collaborative environment and cross-cultural opportunities. The vision of the Hyderabad local committee is to create relevant, experiential opportunities to build progressive individuals.
- The document summarizes the state of financial affairs as of July 7th, 2014, including a bank balance of 3.06 lakhs and fixed deposits of 8.04 lakhs.
- It analyzes several projects (iGCDP, iGIP), noting gaps in realizations and negative cash flows for some.
- Investments made are outlined, such as flat rent of 84,000 INR and raises of 96,000 INR.
- Upcoming expenses are listed, including those for alumni engagement, office costs, and recruitment.
- The document concludes by thanking the reader.
This document reviews BD-ER's achievements and non-achievements over the past period. It celebrates successes like Nexus 2013, NEP, ER, and department culture, while noting failures to meet Q2 fundraising targets and March recruitment goals. Finally, it outlines upcoming targets, including fundraising, youth business programs, improving Pbox and NEP raising, and launching MLM 3.0 and a membership development initiative.
The document summarizes the results of a company's recruitment efforts in the first quarter, including what strategies worked well such as online promotions and information seminars, what challenges they faced including a poor department culture and unsuccessful university partnerships. It also provides data on their national standing for raising funds, matching donors to causes, and realizing donations. An action plan is outlined to improve member retention and meet July targets through aggressive fundraising and matching donors in the pipeline.
The document provides updates on various marketing, public relations, and recruitment activities for an organization. It mentions securing partnerships with business schools, an upcoming event campaign called Genesis, social media promotion through tweets and videos, and follow up meetings with media outlets. It also congratulates several student groups for their achievements. The document uses hashtags and informal language to discuss different status updates.
DevOps CI Automation Continuous IntegrationIRJET Journal
This document discusses implementing a DevOps continuous integration (CI) automation pipeline for test automation. It involves developing a Java-based test automation framework using Selenium and TestNG. Test cases and framework code are stored in a GitHub repository. Jenkins is configured to automatically build and run tests whenever code is committed to GitHub. This allows for continuous regression testing and helps deliver defect-free software by catching issues early in the development cycle.
DevOps aims to bring development and operations teams closer together through automation, shared tools and processes. Automating builds improves consistency, reduces errors and improves productivity. Common issues with builds include them being too long, handling a large volume, or being too complex. Solutions include improving build speed, addressing long/complex builds through techniques like distributed builds, and using build acceleration tools. Automation is a key part of DevOps and enables continuous integration, testing and deployment.
This document discusses improvements to agile methodology through continuous integration using dynamic regression, code bisection, and code quality. It proposes mapping source code to test suites and running only relevant tests after code changes to speed up testing. When failures occur, code bisection is used to quickly identify responsible code changes. Code quality is also assessed continuously using tools like Sonar to monitor for issues. The approaches aim to improve agility, reduce bug fixing time, and ensure high code quality.
The document contains details about the development of a bug tracking system as part of an industrial training program. It includes diagrams of the system architecture at different levels of abstraction, an entity relationship diagram, and descriptions of features, technologies used, and the development process. The training focused on analyzing requirements, designing data models and interfaces, implementing functionality, and testing the system to track bugs and monitor their resolution.
The document describes several software development life cycle models:
1. The classical waterfall model divides the life cycle into sequential phases from requirements to maintenance.
2. The iterative waterfall model adds feedback loops to allow correcting defects in earlier phases.
3. The prototyping model develops prototypes to refine requirements before development.
4. The evolutionary model incrementally develops modules and delivers functioning systems in successive versions.
5. The spiral model represents each phase as a loop through objective setting, risk assessment, development, and review.
In software engineering, a model is an abstraction of a software system, used to represent its structure, behavior, and functionality. Models can be created at various levels of abstraction, from high-level conceptual models that describe the overall system architecture, to low-level detailed models that describe individual components or interactions.
The document describes several software development life cycle models:
- The classical waterfall model divides the life cycle into sequential phases from requirements to maintenance.
- The iterative waterfall model adds feedback loops to allow reworking phases if defects are found.
- The prototyping model uses prototypes to refine requirements before full development.
- The evolutionary model incrementally develops modules into successive releases of increasing capability.
- The spiral model represents phases as loops to iteratively address risks and develop the product in a flexible manner.
The document discusses various software development life cycle models, including the classical waterfall model, iterative waterfall model, prototyping model, evolutionary model, and spiral model. The classical waterfall model divides the life cycle into sequential phases such as requirements, design, implementation, testing, and maintenance. The iterative waterfall model adds feedback loops to allow reworking of phases if defects are found. The prototyping model uses prototypes to refine requirements before full development. The evolutionary model incrementally develops modules in successive versions. The spiral model represents phases as loops to iteratively address risks through prototyping.
Automation Testing of Web based Application with Selenium and HP UFT (QTP)IRJET Journal
This document compares two automation testing tools: Selenium and HP UFT (also known as QTP). It first provides background on software testing and the benefits of automation over manual testing. It then discusses the aims of the study, related work on automation testing frameworks and the major components of the Selenium tool. The key points are that the document aims to compare Selenium and UFT/QTP for testing web applications and provides background on software testing, the benefits of automation, automation frameworks, and an overview of the Selenium tool and its major components in order to facilitate the comparison.
Test Driven Development:Unit Testing, Dependency Injection, Mockingmrjawright
Test Driven Development (TDD) is a software development process that involves writing unit tests before production code. Empirical studies have shown TDD can reduce defect density by 40-90% and increase productivity. Unit tests provide a safety net for changes by verifying new code does not break existing functionality. TDD promotes design principles like dependency injection and mocking to isolate code dependencies for flexible testing. While TDD may increase initial development time, it can save time during maintenance which accounts for 60-90% of a software lifecycle.
The QA professional is certainly needed within a company. However, in many cases, unfortunately, there are companies that don’t adhere to this professional culture. Increasing the code quality becomes a major challenge for development teams in these cases. This presentation aims to give tips learned from mistakes of this attempt to try to improve the code quality and test execution time for a quick feedback.
Part 2 improving your software development v1.0Jasmine Conseil
The document discusses improving software development processes through continuous integration using agile tools. It describes how build tools can automate various parts of the software development process, including compiling, testing, packaging, and deploying code. Maven is presented as a common build tool that supports a well-defined development lifecycle. Continuous integration principles are explained, emphasizing how integrating code changes frequently and running automated builds can reduce integration issues. Hudson is introduced as an open-source continuous integration server that supports automation and provides feedback. The JasForge project aims to manage agile tools like Hudson in an integrated platform to control the software development process.
This document defines a CI/CD pipeline for PHP applications using AWS services like CodeBuild and CodePipeline. It discusses setting up continuous integration with a source control system, build system, testing, code reviews, and branching strategies. For continuous delivery, it covers deploying code changes automatically to a testing environment, enabling manual approvals, and deployment strategies like blue/green deployments using Elastic Beanstalk. The goal is to define a simple yet robust CI/CD pipeline to find bugs quickly, improve quality, and reduce release times.
Multi step automated refactoring for code smelleSAT Journals
Abstract
Brain MR Image can detect many abnormalities like tumor, cysts, bleeding, infection etc. Analysis of brain MRI using image
processing techniques has been an active research in the field of medical imaging. In this work, it is shown that MR image of brain
represent a multi fractal system which is described a continuous spectrum of exponents rather than a single exponent (fractal
dimension). Multi fractal analysis has been performed on number of images from OASIS database are analyzed. The properties of
multi fractal spectrum of a system have been exploited to prove the results. Multi fractal spectra are determined using the modified
box-counting method of fractal dimension estimation.
Keywords: Brain MR Image, Multi fractal, Box-counting
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Implementation of reducing features to improve code change based bug predicti...eSAT Journals
Abstract Today, we are getting plenty of bugs in the software because of variations in the software and hardware technologies. Bugs are nothing but Software faults, existing a severe challenge for system reliability and dependability. To identify the bugs from the software bug prediction is convenient approach. To visualize the presence of a bug in a source code file, recently, Machine learning classifiers approach is developed. Because of a huge number of machine learned features current classifier-based bug prediction have two major problems i) inadequate precision for practical usage ii) measured prediction time. In this paper we used two techniques first, cos-triage algorithm which have a go to enhance the accuracy and also lower the price of bug prediction and second, feature selection methods which eliminate less significant features. Reducing features get better the quality of knowledge extracted and also boost the speed of computation. Keywords: Efficiency, Bug Prediction, Classification, Feature Selection, Accuracy
Software Engineering Past Papers (Short Questions)MuhammadTalha436
1. SWOT analysis is a framework for identifying internal and external factors that can impact a project, product, place or person. It analyzes strengths, weaknesses, opportunities, and threats.
2. Software refactoring is changing software code without altering external behavior to improve internal structure.
3. An embedded system is a programmed system within a larger mechanical or electrical system, often with real-time computing constraints and a dedicated function.
The document discusses software maintenance and modifications to meet changed requirements. It describes identifying reasons for changes, locating sections of code to alter, determining necessary changes, implementing and testing solutions. Key aspects of maintenance include communication between users and developers, understanding original code documentation, analyzing impacts of changes, and thoroughly testing modifications.
This document provides information about obtaining fully solved assignments from an assignment help service. It lists the email and phone contact information and requests students to send their semester and specialization to receive help with assignments. It also lists some of the programs and subjects that assignments are available for, including MBADS, MBAFLEX, MBAN2, and PGDISMN.
Evolution of software; Characteristics of software; Software applications; Components of software; Software myths; Software problems; Software reuse; Overview of risk management; Process visibility; Professional responsibility.
Similar to Summarization Techniques for Code, Changes, and Testing (20)
Maliheh (Mali) Izadi, PhD, Andrea Di Sorbo, and Sebastiano Panichella co-chaired the 3rd Intl. Workshop on NL-based Software Engineering
April 20 2024, Lisbon, Portugal.
Diversity-guided Search Exploration for Self-driving Cars Test Generation thr...Sebastiano Panichella
Timo Blattner, Christian Birchler, Timo Kehrer, Sebastiano Panichella: Diversity-guided Search Exploration for Self-driving Cars Test Generation through Frenet Space Encoding. Intl. Workshop on Search-Based and Fuzz Testing (SBFT). 2024
SBFT Tool Competition 2024 -- Python Test Case Generation TrackSebastiano Panichella
Nicolas Erni, Al-Ameen, Mohammed, Christian Birchler, Pouria Derakhshanfar, Stephan Lukasczyk, Sebastiano Panichella: SBFT Tool Competition 2024 -- Python Test Case Generation Track 17th International Workshop on Search-Based and Fuzz Testing
SBFT Tool Competition 2024 - CPS-UAV Test Case Generation TrackSebastiano Panichella
Sajad Khatiri, Prasun Saurabh, Timothy Zimmermann, Charith Munasinghe, Christian Birchler, Sebastiano Panichella: SBFT Tool Competition 2024 - CPS-UAV Test Case Generation Track 17th International Workshop on Search-Based and Fuzz Testing
Simulation-based Testing of Unmanned Aerial Vehicles with AerialistSebastiano Panichella
Sajad Khatiri, Sebastiano Panichella, Paolo Tonella: Simulation-based Testing of Unmanned Aerial Vehicles with Aerialist. International Conference on Software Engineering. 2024
Testing with Fewer Resources: Toward Adaptive Approaches for Cost-effective ...Sebastiano Panichella
Lecture entitled "Testing with Fewer Resources: Toward Adaptive Approaches for Cost-effective Test Generation and Selection" at the International Summer School
on Search- and Machine Learning-based Software Engineering
June 22-24, 2022 - Córdoba, Spain
Sebastiano Panichella and Christian Birchler
COSMOS:
DevOps for Complex Cyber-physical Systems
Sebastiano Panichella
Zurich University of Applied Sciences (ZHAW)
Workshop on Adaptive CPSoS (WASOS) 2023
Testing and Development Challenges for Complex Cyber-Physical Systems: Insigh...Sebastiano Panichella
Keynote presentation </b>at ICST (AIST workshop) entitled "Testing and Development Challenges for Complex Cyber-Physical Systems: Insights from the COSMOS H2020 Project"
An Empirical Characterization of Software Bugs in Open-Source Cyber-Physical ...Sebastiano Panichella
Presentation at 16th IEEE International Conference on Software
Testing, Verification and Validation (ICST): An Empirical Characterization of Software Bugs in Open-Source Cyber-Physical Systems. Journal of Systems & Software (JSS).
Automated Identification and Qualitative Characterization of Safety Concerns ...Sebastiano Panichella
Presentation at the IEEE/ACM International Conference on
Automated Software Engineering (ASE 2023):
“Automated Identification and Qualitative Characterization of Safety Concerns
Reported in UAV Software Platforms” -
Transactions on Software Engineering and Methodology
This document provides information about the NL-based Software Engineering (NLBSE) '23 workshop to be held on May 20th, 2023. The workshop will have two keynote speakers, two paper presentation sessions, a tool competition, and will be held in a hybrid format with both in-person and remote participation. It outlines the schedule, participating speakers and chairs, instructions for remote participants, and plans for recording and publishing the workshop proceedings.
Simulation-based Test Case Generation for Unmanned Aerial Vehicles in the Nei...Sebastiano Panichella
This document proposes a method called SURREALIST to generate realistic simulated test cases for unmanned aerial vehicles (UAVs) using real flight logs. It aims to address limitations of field testing such as lack of reproducibility and limited test scenarios. SURREALIST works in two steps: 1) It systematically replicates real flights in simulation by finding optimal drone and environment configurations that minimize differences between real and simulated flight trajectories. 2) It generates new challenging test cases by manipulating drone and environment configurations according to a difficulty measure, such as violating safety distances to obstacles. The approach is evaluated on examples of replicating and modifying an existing flight to evaluate its ability to find bugs. SURREALIST aims to generate tests that can discover non
Exposed! A case study on the vulnerability-proneness of Google Play AppsSebastiano Panichella
This study analyzed the vulnerability levels of 1000 mobile apps from Google Play across 23 categories. The key findings were:
1) Medical apps had significantly fewer vulnerabilities than other categories like Finance and Shopping.
2) An app's vulnerability level did not affect its rating, but apps with more downloads tended to have higher vulnerability levels.
3) Contextual information like app description, metadata, and static code features could predict an app's vulnerability level with over 75% accuracy, with market data providing complementary insights to code analysis. Addressing app security is important as users may not be aware of risks when installing apps.
Search-based Software Testing (SBST) '22
Workshop Co-Chairs:
Giovani Guizzo
UNIVERSITY COLLEGE LONDON, UNITED KINGDOM
Sebastiano Panichella
ZURICH UNIVERSITY OF APPLIED SCIENCE, SWITZERLAND
Competition Co-Chairs:
Alessio Gambi
UNIVERSITY OF PASSAU, GERMANY
Gunel Jahangirova
UNIVERSITÀ DELLA SVIZZERA ITALIANA, SWITZERLAND
Vincenzo Riccio
UNIVERSITÀ DELLA SVIZZERA ITALIANA, SWITZERLAND
Fiorella Zampetti
UNIVERSITY OF SANNIO, ITALY
Website Chair:
Rebecca Moussa
UNIVERSITY COLLEGE LONDON, UNITED KINGDOM
Program Committee:
Nazareno Aguirre, Universidad Nacional de Río Cuarto - CONICET, Argentina
Aldeida Aleti, Monash University, Australia
Giuliano Antoniol, Ecole Polytechnique de Montréal, Canada
Kate Bowers, Oakland University, USA
Jose Campos, University of Washington, USA
Thelma E. Colanzi, State University of Maringá, Brazil
Byron DeVries, Grand Valley State University, USA
Gordon Fraser, University of Passau, Germany
Erik Fredericks, Oakland University, USA
Gregory Gay, Chalmers and the University of Gothenburg, Sweden
Alessandra Gorla, IMDEA Software Institute, Spain
Gregory Kapfhammer, Allegheny College, USA
Yiling Lou, Peking University, China
Mitchell Olsthoorn, Delft University of Technology, Netherlands
Justyna Petke, University College London, UK
Silvia R. Vergilio, Universidade Federal do Paraná, Brazil
Simone do Rocio Senger de Souza, University of São Paulo, Brazil
Thomas Vogel, Humboldt-Universität zu Berlin, Germany
Jie Zhang, University College London, UK
Tool Competition
Introduction
NLP-based approaches and tools have been proposed to improve the efficiency of software engineers, processes, and products, by automatically processing natural language artifacts (issues, emails, commits, etc.).
We believe that the availability of accurate tools is becoming increasingly necessary to improve Software Engineering (SE) processes. One important process is issue management and prioritization where developers have to understand, classify, prioritize, assign, etc. incoming issues reported by end-users and developers.
This year, we are pleased to announce the first edition of the NLBSE’22 tool competition on issue report classification, an important task in issue management and prioritization.
For the competition, we provide a dataset encompassing more than 800k labeled issue reports (as bugs, enhancements, and questions) extracted from real open-source projects. You are invited to leverage this dataset for evaluating your classification approaches and compare the achieved results against a proposed baseline approach (based on FastText).
Competition overview
We created a Colab notebook with detailed information about the competition (provided data, baseline approach, paper submission, paper format, etc.).
If you want to participate, you must:
Train and tune a multi-label multi-class classifier using the provided training set. The classifier should assign one label to an issue.
Evaluate your classifier on the provided test set
Write a paper (4 pages max.) describing:
The architecture and details of the classifier
The procedure used to pre-process the data
The procedure used to tune the classifier on the training set
The results of your classifier on the test set
Additional info.: provide a link to your code/tool with proper documentation on how to run it
Submit the paper by emailing the tool competition organizers (see below)
Submissions will be evaluated and accepted based on correctness and reproducibility, defined by the following criteria:
Clarity and detail of the paper content
Availability of the code/tool, released as open-source
Correct training/tuning/evaluation of your code/tool on the provided data
Clarity of the code documentation
The accepted submissions will be published at the workshop proceedings.
The submissions will be ranked based on the F1 score achieved by the proposed classifiers on the test set, as indicated in the papers.
The submission with the highest F1 score will be the winner of the competition.
How to participate?
Email your paper to Oscar Chaparro (oscarch@wm.edu) and Rafael Kallis (rk@rafaelkallis.com) by the submission deadline.
This presentation by Professor Giuseppe Colangelo, Jean Monnet Professor of European Innovation Policy, was made during the discussion “The Intersection between Competition and Data Privacy” held at the 143rd meeting of the OECD Competition Committee on 13 June 2024. More papers and presentations on the topic can be found at oe.cd/ibcdp.
This presentation was uploaded with the author’s consent.
This presentation by Yong Lim, Professor of Economic Law at Seoul National University School of Law, was made during the discussion “Artificial Intelligence, Data and Competition” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/aicomp.
This presentation was uploaded with the author’s consent.
The importance of sustainable and efficient computational practices in artificial intelligence (AI) and deep learning has become increasingly critical. This webinar focuses on the intersection of sustainability and AI, highlighting the significance of energy-efficient deep learning, innovative randomization techniques in neural networks, the potential of reservoir computing, and the cutting-edge realm of neuromorphic computing. This webinar aims to connect theoretical knowledge with practical applications and provide insights into how these innovative approaches can lead to more robust, efficient, and environmentally conscious AI systems.
Webinar Speaker: Prof. Claudio Gallicchio, Assistant Professor, University of Pisa
Claudio Gallicchio is an Assistant Professor at the Department of Computer Science of the University of Pisa, Italy. His research involves merging concepts from Deep Learning, Dynamical Systems, and Randomized Neural Systems, and he has co-authored over 100 scientific publications on the subject. He is the founder of the IEEE CIS Task Force on Reservoir Computing, and the co-founder and chair of the IEEE Task Force on Randomization-based Neural Networks and Learning Systems. He is an associate editor of IEEE Transactions on Neural Networks and Learning Systems (TNNLS).
This presentation by Juraj Čorba, Chair of OECD Working Party on Artificial Intelligence Governance (AIGO), was made during the discussion “Artificial Intelligence, Data and Competition” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/aicomp.
This presentation was uploaded with the author’s consent.
This presentation by OECD, OECD Secretariat, was made during the discussion “The Intersection between Competition and Data Privacy” held at the 143rd meeting of the OECD Competition Committee on 13 June 2024. More papers and presentations on the topic can be found at oe.cd/ibcdp.
This presentation was uploaded with the author’s consent.
This presentation by OECD, OECD Secretariat, was made during the discussion “Pro-competitive Industrial Policy” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/pcip.
This presentation was uploaded with the author’s consent.
• For a full set of 530+ questions. Go to
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This presentation by Nathaniel Lane, Associate Professor in Economics at Oxford University, was made during the discussion “Pro-competitive Industrial Policy” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/pcip.
This presentation was uploaded with the author’s consent.
This presentation by OECD, OECD Secretariat, was made during the discussion “Artificial Intelligence, Data and Competition” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/aicomp.
This presentation was uploaded with the author’s consent.
Gamify it until you make it Improving Agile Development and Operations with ...Ben Linders
So many challenges, so little time. While we’re busy developing software and keeping it operational, we also need to sharpen the saw, but how? Gamification can be a way to look at how you’re doing and find out where to improve. It’s a great way to have everyone involved and get the best out of people.
In this presentation, Ben Linders will show how playing games with the DevOps coaching cards can help to explore your current development and deployment (DevOps) practices and decide as a team what to improve or experiment with.
The games that we play are based on an engagement model. Instead of imposing change, the games enable people to pull in ideas for change and apply those in a way that best suits their collective needs.
By playing games, you can learn from each other. Teams can use games, exercises, and coaching cards to discuss values, principles, and practices, and share their experiences and learnings.
Different game formats can be used to share experiences on DevOps principles and practices and explore how they can be applied effectively. This presentation provides an overview of playing formats and will inspire you to come up with your own formats.
1.) Introduction
Our Movement is not new; it is the same as it was for Freedom, Justice, and Equality since we were labeled as slaves. However, this movement at its core must entail economics.
2.) Historical Context
This is the same movement because none of the previous movements, such as boycotts, were ever completed. For some, maybe, but for the most part, it’s just a place to keep your stable until you’re ready to assimilate them into your system. The rest of the crabs are left in the world’s worst parts, begging for scraps.
3.) Economic Empowerment
Our Movement aims to show that it is indeed possible for the less fortunate to establish their economic system. Everyone else – Caucasian, Asian, Mexican, Israeli, Jews, etc. – has their systems, and they all set up and usurp money from the less fortunate. So, the less fortunate buy from every one of them, yet none of them buy from the less fortunate. Moreover, the less fortunate really don’t have anything to sell.
4.) Collaboration with Organizations
Our Movement will demonstrate how organizations such as the National Association for the Advancement of Colored People, National Urban League, Black Lives Matter, and others can assist in creating a much more indestructible Black Wall Street.
5.) Vision for the Future
Our Movement will not settle for less than those who came before us and stopped before the rights were equal. The economy, jobs, healthcare, education, housing, incarceration – everything is unfair, and what isn’t is rigged for the less fortunate to fail, as evidenced in society.
6.) Call to Action
Our movement has started and implemented everything needed for the advancement of the economic system. There are positions for only those who understand the importance of this movement, as failure to address it will continue the degradation of the people deemed less fortunate.
No, this isn’t Noah’s Ark, nor am I a Prophet. I’m just a man who wrote a couple of books, created a magnificent website: http://www.thearkproject.llc, and who truly hopes to try and initiate a truly sustainable economic system for deprived people. We may not all have the same beliefs, but if our methods are tried, tested, and proven, we can come together and help others. My website: http://www.thearkproject.llc is very informative and considerably controversial. Please check it out, and if you are afraid, leave immediately; it’s no place for cowards. The last Prophet said: “Whoever among you sees an evil action, then let him change it with his hand [by taking action]; if he cannot, then with his tongue [by speaking out]; and if he cannot, then, with his heart – and that is the weakest of faith.” [Sahih Muslim] If we all, or even some of us, did this, there would be significant change. We are able to witness it on small and grand scales, for example, from climate control to business partnerships. I encourage, invite, and challenge you all to support me by visiting my website.
Legislation And Regulations For Import, Manufacture,.pptx
Summarization Techniques for Code, Changes, and Testing
1. Summarization Techniques for
Code, Changes, and Testing
Sebastiano Panichella
Institut für Informatik
Universität Zürich
panichella@ifi.uzh.ch
http://www.ifi.uzh.ch/seal/people/panichella.html
2. Outline
I. Source Code Summaries
II. Code Change Summarization
- Why? Prevent Maintenance Cost.
- How? Using Term-based Text Retrieval (TR) techniques
- Generating Commit Messages via Summarization of Source Code Changes
- Automatic Generation of Release Notes
III. Test Cases Summarization
- Generating Human Readable Test Cases via Summarization of Source Code Techniques
- Evaluation involving 30 developers
9. Questions when Generating
Summaries of Java Classes
9
■ 1) What information to include in the summaries?
■ 2) How much information to include in the
summaries?
■ 3) How to generate and present the summaries?
10. What information include
in the summaries?
■ Methods and attributes relevant for the class
■ Class stereotypes [Dragan et al., ICSM’10]
■ Method stereotypes [Dragan et al., ICSM’06]
■ Access-level heuristics
■ Private, protected, package-protected, public
10
[ L. Moreno at al. - ASE 2012-
“JStereoCode: automatically identifying method and class stereotypes in Java code”]”
11. Example of Important Attributes/Methods
of an Entity Java Class
11
we look at
- Attributes
- Methods
- Dependencies between Classes
12. An approach for Summarizing
a Java Class (JSummarizer)
12
http://www.cs.wayne.edu/~severe/jsummarizer/
13. How to present and
generate the summaries?
Other Code Artefacts can
be Summarised as well:
- Packages
- Classes
- Methods
- etc.
15. Task-Driven Summaries
[ Binkley at al. - ICSM 2013 ]
1) Generating Commit Messages via Summarization of Source Code Changes
2) Automatic Generation of Release Notes
To Improve Commits
Quality
To Improve Releases
Note Quality
15
16. Task-Driven Summaries
[ Binkley at al. - ICSM 2013 ]
1) Generating Commit Messages via Summarization of Source Code Changes
2) Automatic Generation of Release Notes
To Improve Commits
Quality
To Improve Releases
Note Quality
16
17. Commit Message
Should Describe…
The what: changes implemented during the incremental change
The why: motivation and context behind the changes
17
18. Commit Message
Should Describe…
The what: changes implemented during the incremental change
The why: motivation and context behind the changes
18
>20% of the messages were removed:
- they were empty
- had very short strings or lacked any
semantical sense
Maalej and Happel - MSR 10
19. Java project
version i-1
Java project
version i
1. Changes Extractor
2. Stereotypes Detector
3. Message Generator
Generating Commit Messages via
Summarization of Source Code Changes
19
https://github.com/SEMERU-WM/ChangeScribe
20. Example:
This is a degenerate modifier commit: this change set is composed of empty, incidental, and abstract methods.
These methods indicate that a new feature is planned. This change set is mainly composed of:
1. Changes to package org.springframework.social.connect.web:
1.1. Modifications to ConnectController.java:
1.1.1. Add try statement at oauth1Callback(String,NativeWebRequest) method
1.1.2. Add catch clause at oauth1Callback(String,NativeWebRequest) method
1.1.3. Add method invocation to method warn of logger object at
oauth1Callback(String,NativeWebRequest) method
1.2. Modifications to ConnectControllerTest.java:
1.2.1. Modify method invocation mockMvc at oauth1Callback() method
1.2.2. Add a functionality to oauth 1 callback exception while fetching access token
2. Changes to package org.springframework.social.connect.web.test:
2.1. Add a ConnectionRepository implementation for stub connection repository. It allows to:
Find all connections;
Find connections;
Find connections to users;
Get connection;
Get primary connection;
Find primary connection;
Add connection;
Update connection;
Remove connections;
Remove connection
[..............]
20
21. Impact = relative number of
methods impacted by a class in the commit
Generating Commit Messages via
Summarization of Source Code Changes
This is a degenerate modifier commit: this change set is composed of empty, incidental, and abstract methods. These methods
indicate that a new feature is planned. This change set is mainly composed of:
1. Changes to package org.springframework.social.connect.web:
1.1. Modifications to ConnectController.java:
1.1.1. Add try statement at oauth1Callback(String,NativeWebRequest) method
1.1.2. Add catch clause at oauth1Callback(String,NativeWebRequest) method
1.1.3. Add method invocation to method warn of logger object at oauth1Callback(String,NativeWebRequest)
method
1.2. Modifications to ConnectControllerTest.java:
1.2.1. Modify method invocation mockMvc at oauth1Callback() method
1.2.2. Add a functionality to oauth 1 callback exception while fetching access token
2. Changes to package org.springframework.social.connect.web.test:
2.1. Add a ConnectionRepository implementation for stub connection repository. It allows to:
Find all connections;
Find connections;
Find connections to users;
This is a degenerate modifier commit: this change set is composed of empty, incidental, and abstract methods. These methods
indicate that a new feature is planned. This change set is mainly composed of:
1. Changes to package org.springframework.social.connect.web:
1.1. Modifications to ConnectController.java:
1.1.1. Add try statement at oauth1Callback(String,NativeWebRequest) method
1.1.2. Add catch clause at oauth1Callback(String,NativeWebRequest) method
1.1.3. Add method invocation to method warn of logger object at oauth1Callback(String,NativeWebRequest)
method
1.2. Modifications to ConnectControllerTest.java:
1.2.1. Modify method invocation mockMvc at oauth1Callback() method
1.2.2. Add a functionality to oauth 1 callback exception while fetching access token
2. Changes to package org.springframework.social.connect.web.test:
2.1. Add a ConnectionRepository implementation for stub connection repository. It allows to:
Find all connections;
Find connections;
Find connections to users;
17%
Example:
impact >= 17%
22. Original Message
This is a large modifier commit: this is a commit with many methods and combines
multiple roles. This commit includes changes to internationalization, properties or
configuration files (pom.xml). This change set is mainly composed of:
1. Changes to package retrofit.converter:
1.1. Add a Converter implementation for simple XML converter. It allows to:
Instantiate simple XML converter with serializer;
Process simple XML converter simple XML converter from body;
Convert simple XML converter to body
Referenced by:
SimpleXMLConverterTest class
Message Automatically
Generated
22
25. Manual Testing is still
Dominant in Industry…
?Why
Automatically generated tests do not
improve the ability of developers to detect
faults when compared to manual testing.
Fraser et al.
Modeling Readability to Improve Unit Tests
Ermira Daka, José Campos, and
Gordon Fraser
University of Sheffield
Sheffield, UK
Jonathan Dorn and Westley Weimer
University of Virginia
Virginia, USA
ABSTRACT
Writing good unit tests can be tedious and error prone, but even
once they are written, the job is not done: Developers need to reason
about unit tests throughout software development and evolution, in
order to diagnose test failures, maintain the tests, and to understand
code written by other developers. Unreadable tests are more dif-
ficult to maintain and lose some of their value to developers. To
overcome this problem, we propose a domain-specific model of unit
test readability based on human judgements, and use this model to
augment automated unit test generation. The resulting approach can
automatically generate test suites with both high coverage and also
improved readability. In human studies users prefer our improved
tests and are able to answer maintenance questions about them 14%
more quickly at the same level of accuracy.
Categories and Subject Descriptors. D.2.5 [Software Engineer-
ing]: Testing and Debugging – Testing Tools;
Keywords. Readability, unit testing, automated test generation
1. INTRODUCTION
Unit testing is a popular technique in object oriented program-
ming, where efficient automation frameworks such as JUnit allow
unit tests to be defined and executed conveniently. However, pro-
ducing good tests is a tedious and error prone task, and over their
lifetime, these tests often need to be read and understood by different
people. Developers use their own tests to guide their implemen-
tation activities, receive tests from automated unit test generation
tools to improve their test suites, and rely on the tests written by
developers of other code. Any test failures require fixing either the
software or the failing test, and any passing test may be consulted
by developers as documentation and usage example for the code
under test. Test comprehension is a manual activity that requires
one to understand the behavior represented by a test — a task that
may not be easy if the test was written a week ago, difficult if it
was written by a different person, and challenging if the test was
generated automatically.
How difficult it is to understand a unit test depends on many
factors. Unit tests for object-oriented languages typically consist of
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not made or distributed for profit or commercial advantage and that copies
bear this notice and the full citation on the first page. To copy otherwise, to
republish, to post on servers or to redistribute to lists, requires prior specific
permission and/or a fee.
Copyright 20XX ACM X-XXXXX-XX-X/XX/XX ...$15.00.
ElementName elementName0 = new ElementName("", "");
Class<Object> class0 = Object.class;
VirtualHandler virtualHandler0 = new VirtualHandler(
elementName0, (Class) class0);
Object object0 = new Object();
RootHandler rootHandler0 = new RootHandler((ObjectHandler
) virtualHandler0, object0);
ObjectHandlerAdapter objectHandlerAdapter0 = new
ObjectHandlerAdapter((ObjectHandlerInterface)
rootHandler0);
assertEquals("ObjectHandlerAdapter",
objectHandlerAdapter0.getName());
ObjectHandlerAdapter objectHandlerAdapter0 = new
ObjectHandlerAdapter((ObjectHandlerInterface) null);
assertEquals("ObjectHandlerAdapter",
objectHandlerAdapter0.getName());
Figure 1: Two versions of a test that exercise the same functionality
but have a different appearance and readability.
sequences of calls to instantiate various objects, bring them to appro-
priate states, and create interactions between them. The particular
choice of sequence of calls and values can have a large impact on the
resulting test. For example, consider the pair of unit tests shown in
Figure 1. Both tests exercise the same functionality with respect to
the constructor of the class ObjectHandlerAdaptor in the Xi-
neo open source project (which treats null and rootHandler0
arguments identically). Despite this identical coverage of the subject
class in practice, they are quite different in presentation.
In terms of concrete features that may affect comprehension, the
first test is longer, uses more different classes, defines more variables,
has more parentheses, has longer lines. The visual appearance
of code in general is referred to as its readability — if code is
not readable, intuitively it will be more difficult to perform any
tasks that require understanding it. Despite significant interest from
managers and developers [8], a general understanding of software
readability remains elusive. For source code, Buse and Weimer [7]
applied machine learning on a dataset of code snippets with human
annotated ratings of readability, allowing them to predict whether
code snippets are considered readable or not. Although unit tests
are also just code in principle, they use a much more restricted
set of language features; for example, unit tests usually do not
contain conditional or looping statements. Therefore, a general code
readability metric may not be well suited for unit tests.
In this paper, we address this problem by designing a domain-
specific model of readability based on human judgements that ap-
plies to object oriented unit test cases. To support developers in
deriving readable unit tests, we use this model in an automated ap-
proach to improve the readability of unit tests, and integrate this into
an automated unit test generation tool. In detail, the contributions
of this paper are as follows:
• An analysis of the syntactic features of unit tests and their
Does Automated White-Box Test Generation
Really Help Software Testers?
Gordon Fraser1
Matt Staats2
Phil McMinn1
Andrea Arcuri3
Frank Padberg4
1
Department of 2
Division of Web Science 3
Simula Research 4
Karlsruhe Institute of
Computer Science, and Technology, Laboratory, Technology,
University of Sheffield, UK KAIST, South Korea Norway Karlsruhe, Germany
ABSTRACT
Automated test generation techniques can efficiently produce test
data that systematically cover structural aspects of a program. In
the absence of a specification, a common assumption is that these
tests relieve a developer of most of the work, as the act of testing
is reduced to checking the results of the tests. Although this as-
sumption has persisted for decades, there has been no conclusive
evidence to date confirming it. However, the fact that the approach
has only seen a limited uptake in industry suggests the contrary, and
calls into question its practical usefulness. To investigate this issue,
we performed a controlled experiment comparing a total of 49 sub-
jects split between writing tests manually and writing tests with the
aid of an automated unit test generation tool, EVOSUITE. We found
that, on one hand, tool support leads to clear improvements in com-
monly applied quality metrics such as code coverage (up to 300%
increase). However, on the other hand, there was no measurable
improvement in the number of bugs actually found by developers.
Our results not only cast some doubt on how the research commu-
nity evaluates test generation tools, but also point to improvements
and future work necessary before automated test generation tools
will be widely adopted by practitioners.
Categories and Subject Descriptors. D.2.5 [Software Engineer-
ing]: Testing and Debugging – Testing Tools;
General Terms. Algorithms, Experimentation, Reliability, Theory
Keywords. Unit testing, automated test generation, branch cover-
age, empirical software engineering
1. INTRODUCTION
Controlled empirical studies involving human subjects are not
common in software engineering. A recent survey by Sjoberg et
al. [28] showed that out of 5,453 analyzed software engineering
articles, only 1.9% included a controlled study with human sub-
jects. For software testing, several novel techniques and tools have
been developed to automate and solve different kinds of problems
and tasks—however, they have, in general, only been evaluated us-
ing surrogate measures (e.g., code coverage), and not with human
Permission to make digital or hard copies of all or part of this work for
personal or classroom use is granted without fee provided that copies are
not made or distributed for profit or commercial advantage and that copies
testers—leaving unanswered the more directly relevant question:
Does technique X really help software testers?
This paper addresses this question in the context of automated
white-box test generation, a research area that has received much
attention of late (e.g., [8, 12, 18, 31, 32]). When using white-box
test generation, a developer need not manually write the entire test
suite, and can instead automatically generate a set of test inputs
that systematically exercise a program (for example, by covering
all branches), and only need check that the outputs for the test in-
puts match those expected. Although the benefits for the developer
seem obvious, there is little evidence that it is effective for practical
software development. Manual testing is still dominant in industry,
and research tools are commonly evaluated in terms of code cover-
age achieved and other automatically measurable metrics that can
be applied without the involvement of actual end-users.
In order to determine if automated test generation is really help-
ful for software testing in a scenario without automated oracles, we
performed a controlled experiment involving 49 human subjects.
Subjects were given one of three Java classes containing seeded
faults and were asked to construct a JUnit test suite either manu-
ally, or with the assistance of the automated white-box test genera-
tion tool EVOSUITE [8]. EVOSUITE automatically produces JUnit
test suites that target branch coverage, and these unit tests contain
assertions that reflect the current behaviour of the class [10]. Con-
sequently, if the current behaviour is faulty, the assertions reflecting
the incorrect behaviour must be corrected. The performance of the
subjects was measured in terms of coverage, seeded faults found,
mutation score, and erroneous tests produced.
Our study yields three key results:
1. The experiment results confirm that tools for automated test
generation are effective at what they are designed to do—
producing test suites with high code coverage—when com-
pared with those constructed by humans.
2. The study does not confirm that using automated tools de-
signed for high coverage actually helps in finding faults. In
our experiments, subjects using EVOSUITE found the same
number of faults as manual testers, and during subsequent
mutation analysis, test suites did not always have higher mu-
tation scores.
3. Investigating how test suites evolve over the course of a test-
ing session revealed that there is a need to re-think test gen-
eration tools: developers seem to spend most of their time
analyzing what the tool produces. If the tool produces a poor
initial test suite, this is clearly detrimental for testing.
A
Does Automated Unit Test Generation Really Help Software Testers?
A Controlled Empirical Study
Gordon Fraser, Department of Computer Science, University of Sheffield,
Regent Court, 211 Portobello
S1 4DP, Sheffield, UK
Gordon.Fraser@sheffield.ac.uk
Matt Staats, SnT Centre for Security, Reliability and Trust, University of Luxembourg,
4 rue Alphonse Weicker
L-2721 Luxembourg, Luxembourg,
staatsm@gmail.com
Phil McMinn, Department of Computer Science, University of Sheffield,
Regent Court, 211 Portobello
S1 4DP, Sheffield, UK
p.mcminn@sheffield.ac.uk
Andrea Arcuri, Certus Software V&V Center at Simula Research Laboratory,
P.O. Box 134, Lysaker, Norway
arcuri@simula.no
Frank Padberg, Karlsruhe Institute of Technology,
Karlsruhe, Germany
Work on automated test generation has produced several tools capable of generating test data which achieves
high structural coverage over a program. In the absence of a specification, developers are expected to manually
construct or verify the test oracle for each test input. Nevertheless, it is assumed that these generated tests
ease the task of testing for the developer, as testing is reduced to checking the results of tests. While this
assumption has persisted for decades, there has been no conclusive evidence to date confirming it. However,
the limited adoption in industry indicates this assumption may not be correct, and calls into question the
practical value of test generation tools. To investigate this issue, we performed two controlled experiments
comparing a total of 97 subjects split between writing tests manually and writing tests with the aid of an
automated unit test generation tool, EVOSUITE. We found that, on one hand, tool support leads to clear
improvements in commonly applied quality metrics such as code coverage (up to 300% increase). However, on
the other hand, there was no measurable improvement in the number of bugs actually found by developers.
Our results not only cast some doubt on how the research community evaluates test generation tools, but
Developers spend up to 50% of their time
in understanding and analyzing the output of
automatic tools.
Fraser et al.
“Professional developers perceive
generated test cases as hard to
understand.”
Dana et al.
25
26. Example of Test Case
Generated by Evosuite
Test Case Automatically
Generated by Evosuite
(for the class apache.commons.Option.Java)
}
26
27. Example of Test Case
Generated by Evosuite
Test Case Automatically
Generated by Evosuite
(for the class apache.commons.Option.Java)
Not Meaningful
Names for Test Methods
It is difficult to tell, without
reading the contents of the
target class,what is the
behavior under test.
}
27
28. Test Case Automatically
Generated by Evosuite
(for the class apache.commons.Option.Java)
28
Example of Test Case
Generated by Evosuite
29. Test Case Automatically
Generated by Evosuite
(for the class apache.commons.Option.Java)
Our Solution: Automatically Generate
Summaries of Test Cases
29
30. Our Solution: Automatically Generate
Summaries of Test Cases
Sebastiano Panichella, Annibale Panichella, Moritz Beller, Andy Zaidman, and Harald Gall:
“The impact of test case summaries on bug fixing performance: An empirical investigation” - ICSE 2016.
30
31. Empirical Study: Evaluating the Usefulness
of the Generated Summaries
Bug Fixing:
WITH
Comments
WITHOUT
Comments
WITHOUT
WITH
WITH
Comments
WITHOUT
Comments
WITHOUT
WITH
30 Developers:
- 22 Researchers
- 8 Professional Developers
31
15
15
33. Future work…
Automatic (Re-)Documenting Test Cases…
Automatic Optimize Test Cases Readability
by Minimizing (the Generated)Code Smells
Automatic Assigning/Generating Meaningful
names for test cases