This is the predominant definition for lines of code usedby researchers. Jun 11, 2018 sei cmm in software engineering overview of sei cmm. In regards to software project cost and underestimation, it is a problem that has not diminished in the last 70 years. Cost estimation loc lines of code in software engineering youtube. Nov 30, 2000 for slides, see lecture 20 lecture 24, legal issues powerpoint html lecture 25, management iii. Ppt software metrics powerpoint presentation, free. Sep 09, 20 project planning in software engineering 1. Description of responsibilities for the apache software cyber engineer. Faa story, introduction to class projects in ppt and in html and as a sequence of jpegs. Public project training system ppts is a government. Validation and verification powerpoint html lecture 23, tools for debugging ii for slides, see lecture 20 lecture 24, legal issues powerpoint html lecture 25, management iii. Software metrics are valuable for many reasons, including measuring software performance, planning work items, measuring productivity, and many other uses. Audio, video, speech synthesis and recognition outline 28.
Kloc is the estimated size of the software product indicate in kilo lines of code, a 1,a 2,b 1,b 2 are constants for each group of software products, tdev is the estimated time to develop the software, expressed in months, effort is the total effort required to develop the software product, expressed in person months pms. Project planning in software engineering slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Ppt chapter 1, introduction to software engineering. It drew on a study of 63 projects at trw aerospace where boehm was director of software research and technology. This model has been researched by walston and felix 1977, bailey and basili 1981 and boehm 1981, boehm 2004 as the basis for cocomo model.
If the project manager not able to clai variation among people account for biggest differences in software productivity. Software size estimation line of code methodloc software engineering classes hindi. Introduction to software engineering software engineering software systems are complex impossible to understand by a single person many projects are never finished. Case technology case technology has led to significant improvements in the software process though not the order of magnitude improvements that were once predicted software engineering requires creative thought this is not readily automatable software engineering is a team activity and, for large projects, much time is spent in team interactions. Physical loc lphysical loc is the count of lines in the text of the programs source code including comment lines. The requirements can be obvious or hidden, known or unknown, expected or unexpected from clients point of view. Robustness the software is a tolerate unpredictable or inva be designed with a resilience t extensibility new capabilitie wiih j h h thout major changes to the dli hi le to perform a required ns for a specified period of. This is the first step where the user initiates the request for a desired software product. In this article, i will illustrate how to easily estimate the software effort using known estimation techniques which are function points analysis. It is a procedural cost estimate model for software projects and often used as a process of reliably predicting the various parameters associated with making a project such as size, effort, cost, time and quality. This is a cost estimation model in software in software engineering and it allows you to input some parameters and get an estimate of the level of effort associated with a software project. Loc and fp based estimation, cocomo model brainkart.
It is a procedural cost estimate model for software projects and often used as a process of reliably predicting the various parameters associated with making a. Re engineering is the examination and alteration of a system to reconstitute it in a new form. Risk management tutorial to learn risk management in software engineering in simple, easy and step by step way with syntax, examples and notes. Cmmi overview quality frameworks outline introduction high level overview of cmmi questions and comments what is cmmi. In software engineering effort is used to denote measure of use of workforce and is defined as total.
Both fp and loc are units of measurement for software size. Software engineering is the establishment and use of sound engineering principles in order to obtain economically software that is reliable and work efficiently on real machines. Business software engineering business objectives ensure that the organizational objectives and requirements are accomplished in the project. Software estimation presented by chiranjib pati dhruv majumdar venkat jerome joseph siva shankar dinesh kumar surya pradeep md shakir 1 2. It emphasizes on developing new software from prebuilt components. Here, we have the list of some common myths of software in software engineering according to the category 1. Apache software cyber engineer al02834274 ppt solutions, llc huntsville, al. Park while at the software engineering institute and others developed a framework for defining sloc values, to enable people to.
A basic principle underlying many software engineering techniques. The software development effort estimation is an essential activity before any software project initiation. Managing people powerpoint html lecture 26, risks in software engineering powerpoint html lecture 27, software. Software engineering concepts software processes 1 software process a software process is a set of activities. A software project is the complete procedure of software development from requirement gathering to testing and maintenance, carried out according to the execution methodologies, in a specified period of time to achieve intended software product. Software measurement and function point analysis in hindi. Total number of processes in detailed data flow diagram. Effort estimations based on lines of code and function points. Course informationsyllabus pdf guidelines for all assignments pdf book.
The discipline to develop software in this manner is known as software engineering, a complex process that itself requires many subprocesses. Cmmi capability maturity model integration is a proven industry framework to improve product quality and development efficiency for both hardware and software sponsored by us department of defence in cooperation with carnegie mellon university and the software engineering. Tools for anyone involved in software engineering to understand. The size of a software that is subject to development is required in order to come up with.
Project management is one of the most important activities. Designing software metrics in software engineering by dinesh thakur category. Software engineering 2 4 the three dimensions of software engineering software engineering is a rich, multifaceted, and evolving field. Overview of software engineering and development processes. This generally ends up in either lines of code loc or function points fp, but there are other possible units of measure.
Solved numerical examples of function point calculation. The application of a systematic, disciplined, quantifiable approach to the development, operation, and maintenance of software. Cocomo model constructive cost model introduction software engineering lectures hindi and english. Ppt solutions, inc hiring software airworthiness engineer. People usually refer to all the people involved in the life cycle of a software.
Software development life cycle, sdlc for short, is a welldefined, structured sequence of stages in software engineering to develop the intended software product. Sri gopal naidu higher secondary school biology, general. Software evolution the process of developing a software product using software engineering principles and methods is referred to as software evolution. Cmm defines key activities required at different levels of process maturity.
Covers topics like characteristics of risk, categories of the risk, categories of business risk, other risk categories, principles of risk management, risk identification, rmmm, rmmm plan etc. Managing people powerpoint html lecture 26, risks in software engineering powerpoint html lecture 27, software engineering as engineering powerpoint html. Software projectplanning 2 after the finalization of srs, we would estimate size, cost and development time like to of the project. Objectoriented and classical software the tools engineering. Source lines of code sloc, also known as lines of code loc, is a software metric used to. Presentaion on loc matric and function point matric for software engineering. Copyright 1994 carnegie mellon university disciplined software engineering lecture 3 16 a fuzzy logic example 3 the 5 size ranges are thus. Cheng overview of software engineering and development processes cse870 cse870.
Introduction in ppt and in html and as a sequence of jpegs. Software engineering project size estimation techniques. If you continue browsing the site, you agree to the use of cookies on this website. Cocomo constructive cost model is a regression model based on loc, i. Generally, there is a myth that the members of the. Software re engineering is a process of software development which is done to improve the maintainability of a software system. One of the largest efforts in software engineering has been the design of ada programming language. Because of the extensive uses of components, the component based software engineering cbse process is quite different from that of the traditional waterfall approach. A software metric is a measure of software characteristics which are measurable or countable. May 16, 2012 thisspecifically includes all lines containing program header,declaration, and executable and nonexecutablestatements. The original formulation for computing the function points uses the count of five different parameters, namely, external input types, and external output types, logical internal file type, external interface file types and external inquiry type. Cheng overview of software engineering and development processes cse870.
Software design methodologies and testing department of computer engineering this presentation is about software design methodologies and testing. Objectoriented and classical software engineering teams. The establishment and use of sound engineering principles in order to obtain economically software that is reliable and works efficiently on real machines fritz bauer, at the 1 st nato conference on software engineering, 1969 ieee definition. Software size estimation theory of function point fp software engineering classes duration. Introduction cbse embodies the the buy, dont build philosophy. It characterise only one specific view of size, namely length, it takes no account of functionality or complexity bad software design may cause excessive line of code it is language dependent. Estimation for software projects project planning scope and feasibility project resources estimation of project cost and effort decomposition techniques empirical estimation models 3. This is a brief introduction of the software engineering class. Please do be a part of it and let me know your feedback. Limitations to consider when using metrics to evaluate software systems. The standish chaos report 2004 found only 29% of project met their criteria for project success. Ppt solutions ppt provides systems and software engineering services to government and commercial aerospace organizations. It is often useful to think of it in three dimensions, each dimension being concerned with one particular aspect.
With the effort estimate in personmonths, it may be tempting to pick any project duration based on convenience and then fix a suitable team. Cocomo model constructive cost model introduction in. Cmm was developed by the software engineering institute sei at carnegie mellon university in 1987. Presentation on component based software engineeringcbse. Software engineering, 6th edition, ian sommerville, addisonwesley, isbn 0209815x. The overall ratio of software to hardware is still growing. The content has an indtroductory approach to subject sw engineering. Loc and fp data are used in two ways during software project estimation. This process encompasses a combination of subprocesses like reverse engineering, forward engineering, reconstructing etc. Cse 403 software engineering lectures cse home course webs cse 403 course home page.
Sep 14, 2016 software engineering involves building software and systems that can give a generalised solution to a set of problems instead of adhering to a specific instance. The software requirements specification document is a requirements specification for a software system, is a complete description of the behavior of a system to be developed and may include a set of use cases that describe interactions the users will have with the software. Line of code loc matric and function point matric slideshare. Software measurement page, software size, loc, function point. Year 5 software engineering 2 module 514 academic session. Learn how and when to remove this template message source lines of code sloc, also known as lines of code loc, is a software metric used to measure the size of a computer program by counting the number of lines in the text of the programs source code. As the name suggest, loc count the total number of lines of source code in a project. Nonfunctional requirements impose constraints on the design or. Ppt software engineering powerpoint presentation free to. Cost estimation loc lines of code in software engineering lectures in hindi. Software maintenance and development costs are primarily a function of the number of source lines of code. Direct measures lines of codes loc, speed, cost, memory size, errors.
After establishing a goal on the effort front, we need to establish the goal for delivery schedule. Logical loc logical loc attempts to measure the number. Boehm in the late 1970s and published in boehms 1981 book software engineering economics as a model for estimating effort, cost, and schedule for software projects. Cost estimation loc lines of code in software engineering lectures in hindi s. The initial version was published in 1981 and was known as cocomo81. Software engineering presentations computer science. Software design reliability the software is ab function under stated conditio time. Generally, these objectives are related to business process improvements, customer satisfaction, and quality improvements. In addition it also contains nonfunctional requirements.
A free powerpoint ppt presentation displayed as a flash slide show on id. Gadakh from the department of computer engineering at international institute of information technology, i. Parameter that can be obtained after requirements analysis and that are independent of the specification and implementation language. Pdf analysis of effort estimation based on software project models. Software engineering project size estimation techniques estimation of the size of software is an essential part of software project management. Ppt solutions, llc hiring apache softwarecyber engineer.
Product refers to the estimation of the cost, time and effort required to produce the finished software product. Software project estimation 101 the four basic steps in software project estimation are. For example it cannot measure the size of specification. Software systems are evolving on high rate because there more research to make the better so therefore software system in most cases, legacy software needs to operate on a new computing platform. Software engineering is the application of a systematic. This blog contains engineering notes, computer engineering notes,lecture slides, civil engineering lecture notes, mechanical engineering lectures ppt, engineering ppt free download engineering ppt pdf slides lecture notes seminars. Software engineering ii cs605 vu lectures, handouts, ppt.
It helps the project manager to further predict the effort and time which will be needed to build the project. To understand the importance of measurement in software engineering to describe and compare the different. Average productivity for systems of this type 620 loc pm. The software requirements are description of features and functionalities of the target system. Topics for software engineering projects seminarsonly. Lines of code and function points were described as measures from which productivity metrics can be computed. Re engineering is mostly used in the context where a legacy system is involved. Overview of software development processes in ppt and in html. Software size estimation, fp, ucp, loc, op and project management. Good to knwo for working professionals and students. It is a framework which is used to analyse the approach and techniques followed by any organization to develop a software product.
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