These metrics enable management to understand the quality of the software, the productivity of the development team, code complexity, customer satisfaction, agile process, and operational metrics. This is possible by collecting quality and productivity data and then analyzing and comparing these data with past averages in order to know whether quality improvements have occurred. Kan discusses several metrics in each of three groups of software quality metrics. Note that process metrics can also be derived using the characteristics of a particular software engineering activity. The essence of software quality engineering is to investigate the relationships among in process metrics, project characteristics, and endproduct quality, and, based on the findings, to engineer. It is common for operational processes to be heavily optimized in a cycle of measurement, improvement and measurement. Software quality metrics can be divided further into endproduct quality metrics and in process quality metrics. Software metrics software engineering definitions measure quantitative indication of extent, amount, dimension, capacity, or size of some attribute of a product or process. Well now take a closer look at the various types of the two most important categories of metrics project metrics, and process metrics. As process manager of the quality management process in product development for ibms eserver iseries software development, his responsibilities include quality goal setting, supplier quality requirements, quality plans, inprocess metrics, field quality status, and. The main contribution of this work is the easy and extensible solution to software quality of validation and verification in software develop process. In the area of software engineering a wide variety of software quality metrics has. Software process and product metrics details and pdf to.
Process metrics can be used to improve software development and maintenance. Software is considered to be a collection of executable programming code, associated libraries and documentations. Chapter 2 discusses the process of requirement engineering and requirements management followed by software requirements speci. Collecting software engineering data software quality. Describes the characteristics of the product such as size, complexity, design features, performance, and quality level.
The history of software metrics is almost as old as the history of software engineering. Software measurement process must be a good oriented methodical process that measures, evaluates, adjusts, and finally improves the software development process. Software metrics for different types of software defects. Includes change management and defect prevention product and processes are quantitatively controlled with detailed measurement. For example, an organization may measure the effort and time spent by considering the user interface design.
Five fundamental parameters that can be abstracted from software costing models. Process metrics are standard measurements that are used to evaluate and benchmark the performance of business processes. Size process personnel environment required quality overviewed in chapter 2 much more detail in chapter 3. Product metrics describe the characteristics of the product such as size, complexity, design features, performance, and quality level. Commonly used by management to check the budget and office procedures for efficiency. Measurement planning activitiesstep 2 39 figure 37. Chapter 3 introduces software process improvements. They enable managers and practitioners to assess what works and what doesnt. Therefore, we use formal approaches in order to describe the fundamental aspects of. Bus route enquiry system software engineering project pdf. Software metrics in software engineering computer notes. A program is an executable code, which serves some computational purpose. Software quality metrics overview semantic scholar.
Software process and project metrics linkedin slideshare. Increase the speed and reliability of your team by. Software measurement process must be a good oriented methodical process that measures, evaluates, adjusts, and finally improves the software development. This document lays out a project plan for the development of dtc project the plan will include, but is not restricted to, a summary of the system functionality, the scope of the project from the perspective of the dtc project team me and my mentors, scheduling and delivery estimates, project risks and how those risks will.
Motivations for using metrics in software engineering. Based on semest, software engineering measurement practitio ners, such as project managers and quality engineers, can manipulate the complex. Software metrics product process project metrics lecture. Software metrics are analyzed and assessed by software managers. Metrics and models in software quality engineering. Measurement is the act or process of assigning a num. They offer insight into the effectiveness of the software process and the projects that are conducted using the process as a framework. Advantage of using these process are also discussed. Pdf software measurement and software metrics in software quality. Progress monitoring of agile contractors january 2014 technical note will hayes, suzanne miller, mary ann lapham, eileen wrubel, timothy a. A simple process model for defect tracking 36 figure 35. Process models in software engineering walt scacchi, institute for software research, university of california, irvine february 2001 revised version, may 2001, october 2001 final version to appear in, j.
Software metrics help project managers to gain an insight into the efficiency of the software process, project, and product. Download file pdf product metrics in software engineering metrics and kpis metrics covered 1. This is worrying given that the major rationale for using metrics is to improve the software engineering decision making process from a managerial and. In applying measurements to software engineering, several types of metrics. He also describes the key metrics used by several major software developers and discusses software metrics data collection. Number of errors metric quantitative measure of degree to which a system, component or process possesses a given attribute. It outlines a cookbook method that the reader can use to simplify the journey from software metrics in concept to delivered information. This technical note offers a reference for those working to oversee software development on the acquisition of major systems from developers using agile methods. The term software engineering is composed of two words, software and engineering. Requirements engineering re refers to the process of defining, documenting, and maintaining requirements in the engineering design process. Capers jones, from the forewordmetrics and models in software quality engineering, second edition, is the definitive book on this essential topic of software development. Software metrics can be classified into three categories. Comprehensive in scope with extensive industry examples, it shows how to measure software quality and use measurements to improve the software development process. Metrics and models in software quality engineering, second edition, is the definitive book on this essential topic of software development.
Classification of software metrics in software engineering. Software metrics provide a quantitative basis for the development and validation of models of the software development process. Metrics ou should know to nderstand our engineering efficiency 10 fixing the source of truth in the first place. The result of the application of the goal question metric approach application is the. These characteristics can be used to improve the development and maintenance activities. Quality metrics for business process models padsweb. Commonly used by management to check the budget and.
Metrics and models in software quality engineering, 2nd. A software metric is a measure of software characteristics which are measurable or countable. Kan is senior technical staff member stsm and a technical manager in programming for ibm in rochester, minnesota. Lean government process metrics process metricsmetrics that address a specific process or programenable agencies to achieve, assess, and communicate compelling process improvement results. Measurable attributes associated with software process entities 44. Software process and product metrics are quantitative measures that enable software peopleto gain insight into the efficacy of the software process and the projects that are conductedusing the process as a framework. In chapter 4 software metrics are introduced and di. Within the software development process, many metrics are that are all connected. Lean government process metrics support several objectives, including. We can accurately measure some property of software or process. Requirement engineering provides the appropriate mechanism to understand what the customer desires, analyzing the need, and assessing feasibility, negotiating a reasonable solution, specifying the solution clearly, validating the. Software development metrics examples these metrics enable management to understand the quality of the software, the productivity of the development team, code complexity, customer satisfaction, agile process, and operational metrics. Nasa software web site nasa only software engineering initiative plan pdf npr 7150. Measurable entities in a software process 43 figure 38.
Software metrics tools should consider the benefits added to the quality assessment of the development process and product by appropriate representation of metric data. Software metrics are valuable for many reasons, including measuring software performance, planning work items, measuring productivity, and many other uses. Continuous process and product improvement, software engineering metrics, updated policies and guidelines, infusion of software engineering research and technology, and. Metrics in the process and project domains process indicators enable a software engineering organization to gain insight into the efficacy of an existing process i. Software metrics massachusetts institute of technology. Software engineering requirement engineering javatpoint. No way to measure property directly or final product does not yet exist for predicting, need a model of relationship of predicted variable with other measurable variables. Scalability if the software process were not based on scientific and engineering concepts, it would be easier to recreate new software than to scale an existing one.
Software process and product metrics are quantitative measures of they are a management tool. Once you have identified useful metrics, assess your organization to see whether it is capable of providing useful information for the measurement. Linda westfall is the president of the westfall team, which provides software metrics and software quality engineering training and. Project and process metrics in software engineering. Yet, the extensive research and literature on the subject has had little impact on industrial practice. In regards to software project cost and underestimation, it is. It is observed that process metrics are of two types, namely, private and public. Obtain knowledge on project metrics and process metrics which are quantitative measures that enable software engineers to gain insight into.
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