The document discusses a machine learning model to predict loan defaults. It loads and preprocesses a dataset on loan applications, which contains over 50 features for 56,000 applications in the training set and 24,000 in the test set. It explores the data, encodes categorical features, scales numeric features, and defines models including CatBoost, RGF and LightGBM to make predictions. Cross-validation is used to evaluate the models on the preprocessed training data.
Object oriented programming (OOP) provides more secure programs by hiding data. This document contains a 50-question multiple choice quiz on OOP concepts for a class. It tests knowledge of OOP principles like encapsulation, inheritance, polymorphism, abstraction. It also covers Java topics like classes, objects, methods, packages. The questions range from basic syntax and terminology to analyzing code snippets and designing programs based on scenarios.
This document contains a final examination paper for an Object Oriented Programming course consisting of two sections - Section A with 40 multiple choice questions and Section B with 2 structure questions. The paper provides instructions to answer all questions, covers various CLOs (course learning outcomes) related to OOP concepts like UML, classes, objects, inheritance, polymorphism and exceptions. It tests the students' understanding of Java programming fundamentals including variable scope, data types, control structures, exception handling and more.
The document is a sample paper for Class XII Subject Informatics Practices. It consists of 3 sections - Section A with 30 marks, Section B with 20 marks each, and Section C with 20 marks each. Section A contains short answer questions, Section B contains case studies and questions, and Section C contains SQL queries and output questions. The document provides answer keys for all questions.
This document contains an objective section for an Object Oriented Programming exam with 40 multiple choice questions covering key OOP concepts like encapsulation, inheritance, polymorphism, and abstraction. The questions test understanding of access specifiers, class diagrams, constructors, destructors, overloading, templates, and inheritance hierarchies.
The document provides a model question paper for class 12 computer science. It contains 7 questions covering various topics like C++, OOPs, data structures, file handling, SQL, boolean algebra and networking. The paper has a total of 70 marks distributed across different sub-questions having 1, 2, 3 or 4 marks each. Detailed blueprints specifying the marks distribution across different units is also provided.
This document contains an examination paper for a Data Structures course consisting of two sections - an objective multiple choice section and a structured question section. The objective section contains 40 questions testing various concepts related to linear data structures, linked lists, stacks, queues, trees, and sorting algorithms. The structured section contains two questions, with subquestions on algorithm expression methods, differences between lists and linked lists, stack underflow, manipulating two character stacks, adding nodes to a linked list, and more. The paper tests students' understanding of fundamental data structures concepts.
The document contains a sample question paper for CBSE Grade 12 Computer Science exam. It includes multiple choice, short answer and long answer questions on topics like C++ programming, object oriented concepts, data structures, databases and computer networks. Some questions ask to write C++ code for tasks like defining classes, sorting arrays, implementing stacks. Others involve evaluating C++ code snippets, answering conceptual questions, writing SQL queries and solving problems on Boolean algebra and logic circuits.
This document contains a 40 question multiple choice test on database concepts. It covers topics like the ANSI-SPARC architecture, database properties, relationships in ER models, keys, normalization, and transactions. Sample questions test identification of entities, relationships and keys in ER diagrams. Other questions cover SQL statements, relational algebra operations, and concurrency control topics like isolation levels and locking. The test is divided into two sections, with the second section containing two structured questions requiring explanations of database concepts and drawing an ER diagram.
Object oriented programming (OOP) provides more secure programs by hiding data. This document contains a 50-question multiple choice quiz on OOP concepts for a class. It tests knowledge of OOP principles like encapsulation, inheritance, polymorphism, abstraction. It also covers Java topics like classes, objects, methods, packages. The questions range from basic syntax and terminology to analyzing code snippets and designing programs based on scenarios.
This document contains a final examination paper for an Object Oriented Programming course consisting of two sections - Section A with 40 multiple choice questions and Section B with 2 structure questions. The paper provides instructions to answer all questions, covers various CLOs (course learning outcomes) related to OOP concepts like UML, classes, objects, inheritance, polymorphism and exceptions. It tests the students' understanding of Java programming fundamentals including variable scope, data types, control structures, exception handling and more.
The document is a sample paper for Class XII Subject Informatics Practices. It consists of 3 sections - Section A with 30 marks, Section B with 20 marks each, and Section C with 20 marks each. Section A contains short answer questions, Section B contains case studies and questions, and Section C contains SQL queries and output questions. The document provides answer keys for all questions.
This document contains an objective section for an Object Oriented Programming exam with 40 multiple choice questions covering key OOP concepts like encapsulation, inheritance, polymorphism, and abstraction. The questions test understanding of access specifiers, class diagrams, constructors, destructors, overloading, templates, and inheritance hierarchies.
The document provides a model question paper for class 12 computer science. It contains 7 questions covering various topics like C++, OOPs, data structures, file handling, SQL, boolean algebra and networking. The paper has a total of 70 marks distributed across different sub-questions having 1, 2, 3 or 4 marks each. Detailed blueprints specifying the marks distribution across different units is also provided.
This document contains an examination paper for a Data Structures course consisting of two sections - an objective multiple choice section and a structured question section. The objective section contains 40 questions testing various concepts related to linear data structures, linked lists, stacks, queues, trees, and sorting algorithms. The structured section contains two questions, with subquestions on algorithm expression methods, differences between lists and linked lists, stack underflow, manipulating two character stacks, adding nodes to a linked list, and more. The paper tests students' understanding of fundamental data structures concepts.
The document contains a sample question paper for CBSE Grade 12 Computer Science exam. It includes multiple choice, short answer and long answer questions on topics like C++ programming, object oriented concepts, data structures, databases and computer networks. Some questions ask to write C++ code for tasks like defining classes, sorting arrays, implementing stacks. Others involve evaluating C++ code snippets, answering conceptual questions, writing SQL queries and solving problems on Boolean algebra and logic circuits.
This document contains a 40 question multiple choice test on database concepts. It covers topics like the ANSI-SPARC architecture, database properties, relationships in ER models, keys, normalization, and transactions. Sample questions test identification of entities, relationships and keys in ER diagrams. Other questions cover SQL statements, relational algebra operations, and concurrency control topics like isolation levels and locking. The test is divided into two sections, with the second section containing two structured questions requiring explanations of database concepts and drawing an ER diagram.
This document contains a 40 question objective exam on data structures. The exam covers topics like data structure definitions, arrays, structures, linked lists, stacks, queues, trees, searching and sorting algorithms. It provides code examples to analyze and diagrams to interpret. The questions test understanding of data structure concepts and their implementation through choices like defining appropriate structures, accessing elements, performing operations, and identifying algorithms.
The document provides a 3-hour computer science exam containing multiple questions related to C++ programming. It includes questions about automatic type conversion vs type casting, header files, syntax errors, output of code snippets, polymorphism, class definitions, function definitions, arrays, memory allocation, stacks, and postfix notation evaluation.
Question Paper Code 065 informatic Practice New CBSE - 2021 FarhanAhmade
This document provides instructions for a test paper containing 40 questions divided into two parts (Part A and Part B). Part A has two sections - Section I containing 21 short answer questions and Section II containing two case study questions with subparts. Part B is divided into three sections testing different skills with options and varying mark values. The document outlines the question types, number of questions, distribution of marks and provides general instructions for answering the paper.
This document contains a sample paper for Class XII Computer Science subject. It has 7 questions covering various topics in C++ programming. Question 1 has multiple parts on variables, built-in functions, error correction, output of programs, function overloading. Question 2 covers classes, constructors, inheritance. Question 3 includes array and memory problems. Question 4 tests file handling concepts. Questions 5-7 deal with SQL, Boolean algebra, networking, and cyber crimes respectively. The paper tests a range of skills from syntax to problem solving to applying concepts.
Sample Paper 2 Class XI (Computer Science)Poonam Chopra
This document contains a sample paper for Class 11 Computer Science with 7 questions covering topics like characteristics of computers, operating systems, data vs information, RAM vs ROM, loops, arrays, functions, structures, unions, and different types of errors. The paper has 70 total marks and is focused on testing knowledge of basic C++ programming concepts through multiple choice and code writing questions.
The document contains a confidential database system exam with two sections - objective questions and structured questions. The objective questions section contains 40 multiple choice questions testing various database concepts like the three schema architecture, entity-relationship modeling, relational algebra, SQL, normalization, and transactions. The structured questions section contains two essay questions, with the first asking about database architecture, properties, relationships and creating tables from given schemas. The second asks about database transaction properties, data definition language statements, normalization forms, and generating output from SQL statements on a sample table.
C Programming Training In Ambala ! BATRA COMPUTER CENTREjatin batra
Batra Computer Centre is An ISO certified 9001:2008 training Centre in Ambala.
We Provide C Programming Training in Ambala. BATRA COMPUTER CENTRE provides best training in C, C++, S.E.O, Web Designing, Web Development and So many other courses are available.
This document contains instructions and questions for a computer science exam. It covers topics like call by value vs call by reference in C++, header files, class definitions, functions, arrays, pointers, structures, inheritance, and file input/output. There are multiple choice, short answer, and code writing questions testing a variety of programming concepts.
Sample Paper Class XI (Informatics Practices)Poonam Chopra
This document contains a sample paper for Class 11 Informatics Practices with 7 questions covering topics like operating systems, compilers vs interpreters, databases, programming, SQL, and e-commerce/e-governance. The questions range from short answer and code writing to longer explanations. Some questions have multiple parts requiring different concepts to be tested. This sample paper evaluates students on their understanding of key foundational digital literacy and computer science concepts.
This document contains solutions to questions from a computer science examination. It includes questions on topics like Python, Pandas, SQL, data visualization, and computer networks. The solutions demonstrate how to write Python code to create and manipulate dataframes, plot charts, and perform SQL queries. Examples of network topologies and devices like switches, modems, and gateways are also provided. The document aims to test students' understanding of key concepts in informatics practices.
This document contains an objective test on an open source operating system. It consists of 40 multiple choice questions testing knowledge of open standards principles, Linux installations methods, file systems, shells and commands. It also contains 2 structured questions testing understanding of open standards, Linux benefits and installations, file systems, and Linux permissions and commands. The objective is to test students' comprehension of key concepts in open source operating systems.
This document provides a sample paper for Class XII Computer Science. It includes two sections - Section A focused on C++ programming and Section B focused on Python programming. Each section contains multiple questions testing concepts like functions, classes, inheritance, file handling, arrays, and sorting/searching algorithms. Students are required to attempt either Section A or B, along with the compulsory Section C. The questions range from writing and analyzing code snippets to higher-level conceptual questions.
This document contains information about a final examination for a database systems course taken in June 2012. It has two sections - a multiple choice objective question section and a structured question section. The objective question section contains 40 questions testing various concepts related to databases. The structured question section contains two questions, one asking students to define terms, describe benefits of different database types, and answer questions related to sample tables provided. The second question asks students to perform relational algebra operations on sample tables and write SQL queries.
This document contains instructions and questions for a database systems exam. It is divided into two sections: Section A contains 40 multiple choice questions, and Section B contains two structured questions. The first question in Section B asks students to define database schema architecture and relational data model terms. It also asks students to generate outputs using relational operators. The second question asks students to explain concurrency control problems and draw an ER diagram based on a scenario about a bakery's products and orders. It also contains sample SQL queries to test students' skills.
This document provides a marking scheme for a Computer Science exam for Class XII. It includes instructions, 6 sections (A through C), and multiple choice questions with parts. Section A focuses on C++ programming, Section B on Python, and Section C is compulsory for all students. Questions assess topics like functions, OOPs concepts, arrays, file handling, and more. For each part, the number of marks and what is required are specified. Sample code is provided to test understanding of concepts like data abstraction, inheritance, operator overloading and more.
This document contains questions for an examination in Object Oriented Modeling and Design. Part A includes questions about OO methodology stages, class modeling concepts like objects, classes and attributes, and creating a class model for an undirected graph. Part B focuses on UML concepts like associations, class diagrams, use case modeling and advanced sequence modeling. It asks students to design class models, write advanced use cases, and revise diagrams to eliminate ternary associations.
This document contains sample questions and answers related to object oriented programming concepts. It is organized into 5 units covering topics such as basic OOP principles, classes and objects, inheritance, templates and exceptions, and file handling and the standard template library. Sample questions provide explanations, code snippets, and program examples illustrating key concepts in C++ such as classes, inheritance, polymorphism, templates, exceptions, file I/O, and the STL.
This document contains questions for a 7th semester examination in Embedded Computing Systems. It is divided into two parts, with five questions in each part. The questions cover topics such as the definition of embedded systems, microcontrollers, real-time operating systems, embedded software development, communication interfaces, and embedded system design. Students are instructed to answer five full questions total, with at least two questions from each part.
The document provides information about a 10th semester examination for a Bachelor of Engineering degree in Computer Systems Software. It contains 8 questions split into two parts (Part A and Part B). The questions cover topics related to computer systems software including operating systems, assembly language, macroprocessing, lexical analysis, and parsing. Students are instructed to answer 5 of the 8 questions by selecting at least 2 questions from each part. The document provides the exam details such as duration, maximum marks, and instructions for students.
This document discusses Open SQL and internal tables in ABAP. It provides examples of using SELECT statements to retrieve data from database tables into internal tables, work areas, and result sets. It also covers topics like joins, subqueries, aggregates and more. Key points include using SELECT to retrieve single or multiple records, selecting specific columns, and joining data from multiple tables.
This document discusses Open SQL internal table concepts in ABAP including:
- Select statements to retrieve single or multiple records from database tables
- Selecting specific columns instead of using SELECT *
- Adding WHERE clauses to filter records by conditions
- Using ORDER BY to sort results
- Aggregate functions like COUNT, MIN, MAX to operate on groups
- Joining data from multiple tables using inner joins
This document contains a 40 question objective exam on data structures. The exam covers topics like data structure definitions, arrays, structures, linked lists, stacks, queues, trees, searching and sorting algorithms. It provides code examples to analyze and diagrams to interpret. The questions test understanding of data structure concepts and their implementation through choices like defining appropriate structures, accessing elements, performing operations, and identifying algorithms.
The document provides a 3-hour computer science exam containing multiple questions related to C++ programming. It includes questions about automatic type conversion vs type casting, header files, syntax errors, output of code snippets, polymorphism, class definitions, function definitions, arrays, memory allocation, stacks, and postfix notation evaluation.
Question Paper Code 065 informatic Practice New CBSE - 2021 FarhanAhmade
This document provides instructions for a test paper containing 40 questions divided into two parts (Part A and Part B). Part A has two sections - Section I containing 21 short answer questions and Section II containing two case study questions with subparts. Part B is divided into three sections testing different skills with options and varying mark values. The document outlines the question types, number of questions, distribution of marks and provides general instructions for answering the paper.
This document contains a sample paper for Class XII Computer Science subject. It has 7 questions covering various topics in C++ programming. Question 1 has multiple parts on variables, built-in functions, error correction, output of programs, function overloading. Question 2 covers classes, constructors, inheritance. Question 3 includes array and memory problems. Question 4 tests file handling concepts. Questions 5-7 deal with SQL, Boolean algebra, networking, and cyber crimes respectively. The paper tests a range of skills from syntax to problem solving to applying concepts.
Sample Paper 2 Class XI (Computer Science)Poonam Chopra
This document contains a sample paper for Class 11 Computer Science with 7 questions covering topics like characteristics of computers, operating systems, data vs information, RAM vs ROM, loops, arrays, functions, structures, unions, and different types of errors. The paper has 70 total marks and is focused on testing knowledge of basic C++ programming concepts through multiple choice and code writing questions.
The document contains a confidential database system exam with two sections - objective questions and structured questions. The objective questions section contains 40 multiple choice questions testing various database concepts like the three schema architecture, entity-relationship modeling, relational algebra, SQL, normalization, and transactions. The structured questions section contains two essay questions, with the first asking about database architecture, properties, relationships and creating tables from given schemas. The second asks about database transaction properties, data definition language statements, normalization forms, and generating output from SQL statements on a sample table.
C Programming Training In Ambala ! BATRA COMPUTER CENTREjatin batra
Batra Computer Centre is An ISO certified 9001:2008 training Centre in Ambala.
We Provide C Programming Training in Ambala. BATRA COMPUTER CENTRE provides best training in C, C++, S.E.O, Web Designing, Web Development and So many other courses are available.
This document contains instructions and questions for a computer science exam. It covers topics like call by value vs call by reference in C++, header files, class definitions, functions, arrays, pointers, structures, inheritance, and file input/output. There are multiple choice, short answer, and code writing questions testing a variety of programming concepts.
Sample Paper Class XI (Informatics Practices)Poonam Chopra
This document contains a sample paper for Class 11 Informatics Practices with 7 questions covering topics like operating systems, compilers vs interpreters, databases, programming, SQL, and e-commerce/e-governance. The questions range from short answer and code writing to longer explanations. Some questions have multiple parts requiring different concepts to be tested. This sample paper evaluates students on their understanding of key foundational digital literacy and computer science concepts.
This document contains solutions to questions from a computer science examination. It includes questions on topics like Python, Pandas, SQL, data visualization, and computer networks. The solutions demonstrate how to write Python code to create and manipulate dataframes, plot charts, and perform SQL queries. Examples of network topologies and devices like switches, modems, and gateways are also provided. The document aims to test students' understanding of key concepts in informatics practices.
This document contains an objective test on an open source operating system. It consists of 40 multiple choice questions testing knowledge of open standards principles, Linux installations methods, file systems, shells and commands. It also contains 2 structured questions testing understanding of open standards, Linux benefits and installations, file systems, and Linux permissions and commands. The objective is to test students' comprehension of key concepts in open source operating systems.
This document provides a sample paper for Class XII Computer Science. It includes two sections - Section A focused on C++ programming and Section B focused on Python programming. Each section contains multiple questions testing concepts like functions, classes, inheritance, file handling, arrays, and sorting/searching algorithms. Students are required to attempt either Section A or B, along with the compulsory Section C. The questions range from writing and analyzing code snippets to higher-level conceptual questions.
This document contains information about a final examination for a database systems course taken in June 2012. It has two sections - a multiple choice objective question section and a structured question section. The objective question section contains 40 questions testing various concepts related to databases. The structured question section contains two questions, one asking students to define terms, describe benefits of different database types, and answer questions related to sample tables provided. The second question asks students to perform relational algebra operations on sample tables and write SQL queries.
This document contains instructions and questions for a database systems exam. It is divided into two sections: Section A contains 40 multiple choice questions, and Section B contains two structured questions. The first question in Section B asks students to define database schema architecture and relational data model terms. It also asks students to generate outputs using relational operators. The second question asks students to explain concurrency control problems and draw an ER diagram based on a scenario about a bakery's products and orders. It also contains sample SQL queries to test students' skills.
This document provides a marking scheme for a Computer Science exam for Class XII. It includes instructions, 6 sections (A through C), and multiple choice questions with parts. Section A focuses on C++ programming, Section B on Python, and Section C is compulsory for all students. Questions assess topics like functions, OOPs concepts, arrays, file handling, and more. For each part, the number of marks and what is required are specified. Sample code is provided to test understanding of concepts like data abstraction, inheritance, operator overloading and more.
This document contains questions for an examination in Object Oriented Modeling and Design. Part A includes questions about OO methodology stages, class modeling concepts like objects, classes and attributes, and creating a class model for an undirected graph. Part B focuses on UML concepts like associations, class diagrams, use case modeling and advanced sequence modeling. It asks students to design class models, write advanced use cases, and revise diagrams to eliminate ternary associations.
This document contains sample questions and answers related to object oriented programming concepts. It is organized into 5 units covering topics such as basic OOP principles, classes and objects, inheritance, templates and exceptions, and file handling and the standard template library. Sample questions provide explanations, code snippets, and program examples illustrating key concepts in C++ such as classes, inheritance, polymorphism, templates, exceptions, file I/O, and the STL.
This document contains questions for a 7th semester examination in Embedded Computing Systems. It is divided into two parts, with five questions in each part. The questions cover topics such as the definition of embedded systems, microcontrollers, real-time operating systems, embedded software development, communication interfaces, and embedded system design. Students are instructed to answer five full questions total, with at least two questions from each part.
The document provides information about a 10th semester examination for a Bachelor of Engineering degree in Computer Systems Software. It contains 8 questions split into two parts (Part A and Part B). The questions cover topics related to computer systems software including operating systems, assembly language, macroprocessing, lexical analysis, and parsing. Students are instructed to answer 5 of the 8 questions by selecting at least 2 questions from each part. The document provides the exam details such as duration, maximum marks, and instructions for students.
This document discusses Open SQL and internal tables in ABAP. It provides examples of using SELECT statements to retrieve data from database tables into internal tables, work areas, and result sets. It also covers topics like joins, subqueries, aggregates and more. Key points include using SELECT to retrieve single or multiple records, selecting specific columns, and joining data from multiple tables.
This document discusses Open SQL internal table concepts in ABAP including:
- Select statements to retrieve single or multiple records from database tables
- Selecting specific columns instead of using SELECT *
- Adding WHERE clauses to filter records by conditions
- Using ORDER BY to sort results
- Aggregate functions like COUNT, MIN, MAX to operate on groups
- Joining data from multiple tables using inner joins
This document discusses Open SQL internal table concepts in ABAP including:
- Select statements to retrieve single or multiple records from database tables
- Selecting specific columns instead of using SELECT *
- Adding WHERE clauses to filter records by conditions
- Joins between two or more tables using INNER JOIN
- Using aliases to rename tables in joins
Debug Information And Where They Come FromMin-Yih Hsu
(Presented in COSCUP 2022)
Debug information is a mapping between the original source code and low-level binary locations. It provides developers powerful insights to diagnose problems (via debuggers) in their code and acts as one of the most important foundations for modern software development. Furthermore, in recent years, we are seeing increasing demands of high quality debug information for highly optimized applications that are otherwise “un-debuggable”. For instance, debugging unoptimized games is generally not feasible since it’s likely to miss every single frame. In this talk, we are going to introduce how debug information works and how compilers generate proper debug info even with extensive levels of optimization enabled. At the end of this talk, you will gain insights into the structure of debug information and learn key compiler engineering knowledge on generating high quality debug info for critical, highly optimized software.
The document describes the AlexNet neural network architecture and its application to classifying images from the Fashion-MNIST dataset. It constructs an AlexNet model, loads and preprocesses the Fashion-MNIST data, and trains the model on this dataset for 5 epochs. Key aspects covered include the convolutional and pooling layers in AlexNet, reading and transforming the Fashion-MNIST data, calculating training and test accuracy, and observing slower progress during training compared to LeNet due to the larger image size.
This document provides an overview of key concepts in CICS (Customer Information Control System) programming including:
1. A transaction defines a program to run with a unique ID. A task is an instance of a running transaction. CICS maintains tables (PCT, PPT, FCT, RCT) to track transactions, programs, files, and DB2 tables used.
2. BMS (Basic Mapping Support) is used to create CICS screens (maps). Symbolic and physical maps are generated from BMS macros. Fields in the symbolic map correspond to variables for user input/output.
3. Ready-made utility transactions like CEDA, CEMT, CECI are used to
An Execution-Semantic and Content-and-Context-Based Code-Clone Detection and ...Kamiya Toshihiro
Toshihiro Kamiya: An Execution-Semantic and Content-and-Context-Based Code-Clone Detection and Analysis,
Proceedings of the 9th IEEE International Workshop on Software Clones (IWSC'15), pp. 1-7 (2015).
Beginning direct3d gameprogramming05_thebasics_20160421_jintaeksJinTaek Seo
This document provides an overview of basic Direct3D 9 concepts and code samples for rendering 3D primitives. It discusses compiling a tutorial project, defining a custom vertex type, setting up a vertex buffer, and rendering a triangle. It also describes different primitive types like point lists, line lists, triangle lists, and how to render them using DrawPrimitive. Code examples are provided for each primitive type.
This document discusses working with soil profile data from Macedonia in R. It shows how to import the data as a spatial points data frame, define the coordinate reference system, plot and export the data to different formats like shapefiles and KML for use in GIS software. Key steps include reading in the CSV data, specifying the X and Y coordinates, defining the CRS, plotting the data spatially, and exporting it to formats like shapefiles and KML to visualize and analyze the data in other software.
The document discusses various compiler data structure nodes used in the Java HotSpot VM compiler such as Node, RegionNode, PhiNode, and LoopNode. It describes how nodes are connected and how methods like Ideal, Value, and Identity are used to optimize nodes. The nodes represent an intermediate representation of the code during compilation and are manipulated throughout the various phases of compilation.
This document contains a list of 23 programming problems/exercises related to C++ concepts like arrays, functions, classes, files, and data structures. Some examples include:
1) Writing a function to swap elements between columns of a 2D array.
2) Defining classes for concepts like Queue, Stack, Hotel booking etc. with relevant member functions.
3) Writing SQL queries to retrieve/manipulate data from provided tables on items, students etc.
4) Considering classes like Player derived from Coach and solving related problems.
The document provides detailed descriptions and examples for each problem/exercise.
This document discusses using IPython Notebook and pandas to analyze and visualize data from a PostgreSQL database. It shows how to:
1. Connect to a PostgreSQL database and query data using pandas.read_sql()
2. Load the data into a DataFrame and explore the columns
3. Plot time series and other data visualizations of the DataFrame
4. Join data from multiple database tables and plot the results
Spring 2014 CSCI 111 Final exam of 1 61. (2 points) Fl.docxrafbolet0
Spring 2014 CSCI 111 Final exam � of �1 6
1. (2 points) Flip over this test. On the back of this test write your name in the upper, left-hand
corner.
2. (2 points) What are the four parts of the compiling process (just give me 4 words, not a
paragraph).
3. (4 points) Which of the four steps of the compiling process occurs only once, regardless of
the number of source files your application has?
4. (4 points) Write a line of code that causes the preprocessor to generate an error.
5. (4 points) Write a line of code that causes the compiler to generate an error.
6. (5 points) Describe how you could incorrectly compile the joust project to cause the linker to
generate an error.
7. (5 points) Given:
1 float* fp;
2 //...
3 float pi;
4 pi=*(314 + fp);
Rewrite line 4 using array subscript notation.
Spring 2014 CSCI 111 Final exam � of �2 6
8. (5 points) Given:
1 float arr[100];
2 for(int x=0; x<100; ++x)
3 arr[x]=100-x;
What does the following expression print out?
cout << *arr << endl;
9. (14 points) Given:
int a=0;
int b=6;
int x=0;
Circle each if-expression that evaluates to true:
A) if(b)
B) if(x)
C) if(a=b==6)
D) if(a=b==5)
E) if(a=b=5)
F) if(a=x=0)
G) if(a=x==0)
Spring 2014 CSCI 111 Final exam � of �3 6
10. (10 points) Given:
1 #include<iostream>
2 using namespace std;
3
4 int main()
5 {
6 int x;
7 cout << "Enter a number greater than 10" << endl;
8 while ( x < 10 )
9 {
10 cin >> x;
11 }
12 return 0;
13 }
This program compiles just fine, and sometimes it runs as expected. But sometimes when you
run it, it exits immediately after printing "Enter a number greater than 10". That is, the program
doesn't pause for you to enter a number. Why are you getting this inconsistent behavior?
11. (4 points) What is the output of the following:
int x=4;
int y=3;
A) cout << x / y << endl;
B) cout << x % y << endl;
C) cout << x << "%" << y << endl;
D) cout << "x" << '%' << 'y' << endl;
Spring 2014 CSCI 111 Final exam � of �4 6
12. (16 points) What is the type of the expression. That is, what is the kind of thing that each
expression evaluates to. For example:
3 + 4 integer
You may assume that the variable a has been declared as an integer.
A. a + 4
B. a = 4
C. 3.14 + 4.49
D. 3 + 3.14
E. 'a'
F. cout << a
G. new float[30]
H. new float
Spring 2014 CSCI 111 Final exam � of �5 6
13. (5 points) Write a for-loop that prints out the numbers between 1 and 100 that are evenly
divisible by three.
14. (5 points) Write a while-loop that prints out the numbers between 1 and 100 that are evenly
divisible by three.
15. (5 points) Write a do-while-loop that prints out the numbers between 1 and 100 that are
evenly divisible by three.
Spring 2014 CSCI 111 Final exam � of �6 6
16. (10 points) Given:
1 #include<iostream>
2
3 class Willow {
4 publi.
The client provided KPMG with 3 datasets for analysis: customer demographic data, customer address data, and transactions data from the past 3 months. The transactions data contains 20,000 rows with 26 columns, including customer, product, and transaction information. Some columns have missing values. There are no duplicate rows. Dates in one column are invalid as they all occur on the same day. The new customer list contains 1,000 rows of customer profile data. The data quality assessment found issues with missing values, invalid dates, and potential for further cleaning and analysis.
1. The document provides a sample question paper for Class 12 Informatics Practices with multiple choice and long answer questions.
2. It tests concepts related to networks, operating systems, databases, HTML, and programming in areas like SQL, Java, and C++.
3. The questions cover topics such as network types, communication media, software examples, variable names, data types, functions, loops, conditions, and more.
Declaring friend function with inline codeRajeev Sharan
The document describes programs using object oriented programming concepts in C++. It includes programs on friend functions, nested classes with file handling, and multiple level inheritance. The friend function program demonstrates accessing private data of a class using a friend function. The nested classes program stores student information in arrays of nested classes and reads/writes to a file. The inheritance program uses multiple inheritance to store and display details of students applying for financial assistance.
This document discusses handling both real-time and analytic workloads in a single Hadoop and Cassandra cluster. It describes how Cassandra File System (CFS) allows Hadoop to read and write data stored in Cassandra tables, enabling real-time and batch processing on the same data. It also covers how DataStax Enterprise further integrates Cassandra and Hadoop by allowing them to run on the same cluster and providing a single monitoring view of nodes.
Part II: LLVM Intermediate RepresentationWei-Ren Chen
This document discusses the LLVM intermediate representation (IR) and the lowering process from LLVM IR to machine code. It covers:
1) The characteristics of LLVM IR including SSA form, infinite virtual registers, and phi nodes.
2) How the LLVM IRBuilder class is used to conveniently generate LLVM instructions.
3) The lowering flow from LLVM IR to selection DAGs to machine DAGs to machine instructions and finally machine code.
4) How assembler relaxation can optimize and correct instructions during assembly.
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Loan-defaulters-predictions(Python codes)
1. 03/10/2020 DSN20 - Jupyter Notebook
localhost:8888/notebooks/Desktop/DSN20.ipynb 1/14
In [1]:
In [2]:
In [3]:
train set shape: (56000, 52)
test set shape: (24000, 51)
import pandas as pd
import numpy as np
from pandas import DataFrame
from sklearn.metrics import roc_auc_score
from sklearn.preprocessing import LabelEncoder, MinMaxScaler
import catboost
from rgf.sklearn import RGFClassifier
from lightgbm import LGBMClassifier
from sklearn.ensemble import VotingClassifier, RandomForestClassifier
from sklearn.model_selection import cross_val_score, StratifiedKFold
train=pd.read_csv("Datasets/2020 Qualifying competition/Train.csv")
test=pd.read_csv("Datasets/2020 Qualifying competition/Test.csv")
print("train set shape:",train.shape)
print("test set shape:",test.shape)