This document provides an overview of algorithms and their analysis. It defines an algorithm as a finite sequence of unambiguous instructions that will terminate in a finite amount of time. Key aspects that algorithms must have are being input-defined, having output, being definite, finite, and effective. The document then discusses steps for designing algorithms like understanding the problem, selecting data structures, and verifying correctness. It also covers analyzing algorithms through evaluating their time complexity, which can be worst-case, best-case, or average-case, and space complexity. Common asymptotic notations like Big-O, Omega, and Theta notation are explained for describing an algorithm's efficiency. Finally, basic complexity classes and their properties are summarized.
Algorithm and C code related to data structureSelf-Employed
Everything lies inside an algorithm in the world of coding and algorithm formation which is the basis of data structure and manipulation of the algorithm in computer science and information technology which is ultimately used to find a particular problems solution
Design and Analysis of Algorithm help to design the algorithms for solving different types of problems in Computer Science. It also helps to design and analyze the logic of how the program will work before developing the actual code for a program.
Algorithm and C code related to data structureSelf-Employed
Everything lies inside an algorithm in the world of coding and algorithm formation which is the basis of data structure and manipulation of the algorithm in computer science and information technology which is ultimately used to find a particular problems solution
Design and Analysis of Algorithm help to design the algorithms for solving different types of problems in Computer Science. It also helps to design and analyze the logic of how the program will work before developing the actual code for a program.
Quality defects in TMT Bars, Possible causes and Potential Solutions.PrashantGoswami42
Maintaining high-quality standards in the production of TMT bars is crucial for ensuring structural integrity in construction. Addressing common defects through careful monitoring, standardized processes, and advanced technology can significantly improve the quality of TMT bars. Continuous training and adherence to quality control measures will also play a pivotal role in minimizing these defects.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
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Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
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Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
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R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
3. Definition
• An Algorithm is a finite sequence of instructions, each of which has a
clear meaning and can be performed with a finite amount of effort in
a finite length of time.
• No matter what the input values may be, an algorithm terminates
after executing a finite number of instructions.
4. Criteria for Algorithm
• Input:
• There are zero or more quantities, which are externally supplied;
• Output:
• At least one quantity is produced;
• Definiteness:
• Each instruction must be clear and unambiguous;
5. • Finiteness:
• If we trace out the instructions of an algorithm, then for all cases the
algorithm will terminate after a finite number of steps;
• Effectiveness:
• Every instruction must be sufficiently basic that it can in principle be
carried out by a person using only pencil and paper. It is not enough
that each operation be definite, but it must also be feasible.
8. Steps
1. Understanding the Problem
2. Ascertain the capabilities of the computational device
3. Selection of Exact or Approximate Solutions
4. Decide on the appropriate data structure
5. Algorithm Design Techniques
9. 6. Methods of Specifying an Algorithm
7. Verifying an Algorithm / Proving Correctness of an Algorithm
8. Analyzing an Algorithm
9. Implementation or Coding of an Algorithm
10. 1. Understanding the problem:
• The problem given should be understood completely.
• Check if it is similar to some standard problems & if a Known algorithm
exists.
• Otherwise a new algorithm has to be devised.
• Creating an algorithm is an art which may never be fully automated.
• An important step in the design is to specify an instance of the problem.
11. 2. Ascertain the capabilities of the
computational device:
• Once a problem is understood we need to Know the capabilities of
the computing device this can be done by Knowing the type of the
architecture, speed & memory availability
12. 3. Selection of Exact or Approximate Solutions
• Once algorithm is devised, it is necessary to show that it computes answer
for all the possible legal inputs.
• The solution is stated in two forms, Exact solution or Approximate solution.
• Examples of problems where an exact solution cannot be obtained are
i) Finding a square root of number.
ii) Solutions of non linear equations.
13. 4. Decide on the appropriate data structure:
• Some algorithms do not demand any ingenuity in representing their inputs.
• Some others are in fact are predicted on ingenious data structures.
• A data type is a well-defined collection of data with a well-defined set of
operations on it.
• A data structure is an actual implementation of a particular abstract data
type.
14. 5. Algorithm design techniques
• Creating an algorithm is an art which may never be fully automated.
• By mastering these design strategies, it will become easier for you to
devise new and useful algorithms.
• Divide & Conquer, Dynamic programming , Greedy strategy , such
technique.
15. 6. Methods of specifying an algorithm
• There are mainly two options for specifying an algorithm:
• Use of Natural Language or Pseudocode, &
• Flowcharts.
• A Pseudo code is a mixture of natural language & programming language
like constructs.
• A flowchart is a method of expressing an algorithm by a collection of
connected geometric shapes.
16. 7. Proving an algorithms correctness
• Once algorithm is devised, it is necessary to show that it computes
answer for all the possible legal inputs.
• We refer to this process as algorithm validation.
• The process of validation is to assure us that this algorithm will work
correctly independent of issues concerning programming language it
will be written in.
17. 8. Analyzing algorithms
• As an algorithm is executed, it uses the computers central processing
unit to perform operation and its memory (both immediate and
auxiliary) to hold the program and data.
• Analysis of algorithms and performance analysis refers to the task of
determining how much computing time and storage an algorithm
requires.
19. What is it?
• There are many criteria upon which we can judge an algorithm for
instance:
1. Does it do what we want to do?
2. Does it work correctly according to the original specifications to the task?
3. Is there documentation that describes how to use it and how it works?
4. Are procedures created in such a way that they perform logical sub functions?
5. Is the code readable?
20. ALGORITHM COMPLEXITY
• The complexity of an algorithm f(n) gives the running time and / or
storage space required by the algorithm in terms of n as the size of
input data.
• Suppose X is an algorithm and n is the size of input data, the time and
space used by the Algorithm X are the two main factors which decide
the efficiency of X.
21. • Time Factor:
• The time is measured by counting the number of key operations such
as comparisons in sorting algorithm
• Space Factor:
• The space is measured by counting the maximum memory space
required by the algorithm
22. SPACE COMPLEXITY
• Space complexity of an algorithm represents the amount of memory
space required by the algorithm in its life cycle.
• Space required by an algorithm is equal to the sum of the following
two components −
23. • A fixed part that is a space required to store certain data and variables, that are
independent of the size of the problem. For example simple variables & constant
used, program size etc.
• A variable part is a space required by variables, whose size depends on the size of
the problem. For example dynamic memory allocation, recursion stack space etc.
24. • Space complexity S(P) of any algorithm P is: -
• S(P) = C + SP(I)
• Where C is the fixed part and
• S(I) is the variable part of the algorithm which depends on instance
characteristic I.
26. Explanation: -
• Here we have three variables A, B and C and one constant.
• Hence S(P) = 1+3 =4.
• Now space depends on data types of given variables and constant
types and it will be multiplied accordingly.
27. Components of Space
• Instruction space: Instruction space is the space needed to store the
compiled version of the program instructions.
• Data space: Data space is the space needed to store all constant and
variable values. Data space has two components:
• Space needed by constants and simple variables in program.
• Space needed by dynamically allocated objects such as arrays and class
instances.
28. • Environment stack space: The environment stack is used to save
information needed to resume execution of partially completed functions.
• Instruction Space: The amount of instructions space that is needed
depends on factors such as:
• The compiler used to complete the program into machine code.
• The compiler options in effect at the time of compilation
• The target computer.
29. TIME COMPLEXITY
• Time Complexity of an algorithm represents the amount of time
required by the algorithm to run to completion.
• Time requirements can be defined as a numerical function T(n).
• Where T(n) can be measured as the number of steps, provided each
step consumes constant time.
30. Example:
• Addition of two n-bit integers takes n steps. Consequently, the total
computational time is T(n) = c*n,
• where c is the time taken for addition of two bits.
• Here, we observe that T(n) grows linearly as input size increases.
• The time T (P) taken by a program P is sum of compile time and run
time.
31. • The compile time does not depend on the instance characteristics.
• Also, we may assume that a compiled program will be run several time of a
program. This run time is denoted by tp.
• Because of many of the factor tp depends on are not known at the time of
a program is conceived, it is reasonable to attempt only to estimate tp .
• T(p)=c+tp
32. WORST-CASE, BEST-CASE, AVERAGE CASE
EFFICIENCIES
• Algorithm efficiency depends on the input size n.
• And for some algorithms efficiency depends on type of input.
• We have best, worst & average case efficiencies.
33. Worst-case efficiency:
• Efficiency (number of times the basic operation will be executed) for
the worst case input of size n. i.e. The algorithm runs the longest
among all possible inputs of size n.
34. Best-case efficiency:
• Efficiency (number of times the basic operation will be executed) for
the best case input of size n. i.e. The algorithm runs the fastest among
all possible inputs of size n.
35. Average-case efficiency:
• Average time taken (number of times the basic operation will be
executed) to solve all the possible instances (random) of the input.
• NOTE: NOT the average of worst and best case
36. Basic Efficiency classes
• The time efficiencies of a large number of algorithms fall into only a
few classes.
Constant O(1)
Logarithmic O(log n)
Linear O(n)
n Log n O(n log n)
Quadratic O(n2)
Cubic O(n3)
Polynomial nO(1)
Exponential 2O(n)
37. Efficiency Class
1 Constant
Log (n) Logarithmic
n Linear
n Log (n) n Log (n)
n2 Quadratic
n3 Cubic
2n Exponential
n! Factorial
FAST
SLOW
HIGH TIME EFFICIENCY
LOW TIME EFFICIENCY
38. ALGORITHM ANALYSIS
• Efficiency of an algorithm can be analyzed at two different stages, before
implementation and after Implementation, as follows−
• A priori analysis − This is theoretical analysis of an algorithm. Efficiency of
algorithm is measured by assuming that all other factors e.g. processor
speed, are constant and have no effect on implementation.
39. • A posterior analysis − This is empirical analysis of an algorithm. The
selected algorithm is implemented using programming language.
• This is then executed on target computer machine.
• In this analysis, actual statistics like running time and space required,
are collected.
40. • We learn a priori algorithm analysis. Algorithm analysis deals with
the execution or running time of various operations involved.
• Running time of an operation can be defined as no. of computer
instructions executed per operation.
41. Asymptotic Notations
• Asymptotic analysis of an algorithm, refers to defining the
mathematical boundation / framing of its run-time performance.
• Using asymptotic analysis, we can very well conclude the best case,
average case and worst case scenario of an algorithm.
42. • Asymptotic analysis are input bound i.e., if there's no input to the
algorithm it is concluded to work in a constant time. Other than the "input"
all other factors are considered constant.
• Asymptotic analysis refers to computing the running time of any operation
in mathematical units of computation.
• For example, running time of one operation is computed as f(n) and may
be for another operation it is computed as g(n2).
43. • Which means first operation running time will increase linearly with
the increase in n and running time of second operation will increase
exponentially when n increases.
• Similarly the running time of both operations will be nearly same if n
is significantly small.
44. • Usually, time required by an algorithm falls under three types: -
• Best Case: minimum time required for program execution.
• Average Case: average time required for program execution.
• Worst Case: maximum time required for program execution.
45. • Following are commonly used asymptotic notations used in
calculating running time complexity of an algorithm.
• Ο Notation (Big Oh)
• Ω Notation (Omega)
• θ Notation (Theta)
46. Big Oh Notation, Ο
• The Ο(n) is the formal way to express the upper bound of an
algorithm's running time.
• It measures the worst case time complexity or longest amount of time
an algorithm can possibly take to complete.
47. Definition:
• A function t(n) is said to be in O(g(n)), denoted t(n) ∈O(g(n)), if t(n) is
bounded above by some constant multiple of g(n) for all large n, i.e.,
if there exist some positive constant c and some non-negative integer
n0 such that,
• t(n) ≤ cg(n) for all n ≥ n0
48.
49. • For example,
• for a function f(n)
• Ο(f(n)) = { g(n) : there exists c > 0 and n0 such that g(n) ≤ c.f(n) for all
n > n0. }
50. Omega Notation, Ω
• The Ω(n) is the formal way to express the lower bound of an
algorithm’s running time.
• It measures the best case time complexity or best amount of time an
algorithm can possibly take to complete.
51. Definition:
• A function t(n) is said to be in Ω (g(n)), denoted t(n) ϵ Ω (g(n)), if t(n) is
bounded below by some constant multiple of g (n) for all large n, i.e.,
if there exist some positive constant c and some nonnegative integer
n0 such that,
• t(n) ≥ cg(n) for all n ≥ n0
52.
53. • For example, for a function f(n)
• Ω(f(n)) ≥ { g(n) : there exists c > 0 and n0 such that g(n) ≤ c.f(n) for all
n > n0. }
54. Theta Notation, θ
• The θ(n) is the formal way to express both the lower bound and
upper bound of an algorithm's running time.
55. Definition:
• A function t (n) is said to in Θ (g(n)), denoted t(n) ∈ Θ (g(n), if t(n) is
bounded both above and below by some constant multiple of g (n)
for all large n, i.e., if there exist some positive constant c1 and c2 and
some non-negative integer n0 such that
• c2 g(n) ≤ t(n) ≤ c1 g(n) for all n ≥ n0
56.
57. • Θ(f(n)) = { g(n) if and only if g(n)= Ο(f(n)) and g(n) = Ω(f(n)) for all n >
n0. }
59. FAST Efficiency Class HIGH TIME EFFICIENCY
1 Constant
Log N Logarithmic
N Linear
N Log N N Log N
N2 Quadratic
N3 Cubic
2N Exponential
SLOW N! Factorial LOW TIME EFFICIENCY
60. Constant O (1)
Logarithmic O (Log N)
Linear O (N)
N Log N O (N Log N)
Quadratic O (N2)
Cubic O (N3)
Polynomial N O(1)
Exponential 2 O(n)
62. • Suppose ‘M’ is an algorithm, and suppose ‘n’ is the size of the input
data. Clearly the complexity of f(n) of M increases as n increases. It is
usually the rate of increase of f(n) we want to examine.
• This is usually done by comparing f(n) with some standard functions.
• The most common computing times are:
63. • O(1), O(log n), O(n), O(n log n), O(n2), O(n3), O(2n), n! and nn