Role Of Metrics And Measurement In Software Engineering Pdf
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- Software Measurement Metrics
- Software Testing Metrics: What is, Types & Example
- Software and Software Process Measurement
Skip to Main Content. A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity. Use of this web site signifies your agreement to the terms and conditions. The Research on Software Metrics and Software Complexity Metrics Abstract: The process of software development, including documentation, design, program, test, and maintenance can be measured statistically.
Software Measurement Metrics
Software metrics is a standard of measure that contains many activities which involve some degree of measurement. It can be classified into three categories: product metrics, process metrics, and project metrics. Product metrics describe the characteristics of the product such as size, complexity, design features, performance, and quality level. Process metrics can be used to improve software development and maintenance. Examples include the effectiveness of defect removal during development, the pattern of testing defect arrival, and the response time of the fix process.
Project metrics describe the project characteristics and execution. Examples include the number of software developers, the staffing pattern over the life cycle of the software, cost, schedule, and productivity. Some metrics belong to multiple categories. For example, the in-process quality metrics of a project are both process metrics and project metrics. Software measurement is a diverse collection of these activities that range from models predicting software project costs at a specific stage to measures of program structure.
Effort is expressed as a function of one or more variables such as the size of the program, the capability of the developers and the level of reuse. Cost and effort estimation models have been proposed to predict the project cost during early phases in the software life cycle.
Productivity can be considered as a function of the value and the cost. Each can be decomposed into different measurable size, functionality, time, money, etc. Different possible components of a productivity model can be expressed in the following diagram. The quality of any measurement program is clearly dependent on careful data collection. Data collected can be distilled into simple charts and graphs so that the managers can understand the progress and problem of the development.
Data collection is also essential for scientific investigation of relationships and trends. Quality models have been developed for the measurement of quality of the product without which productivity is meaningless.
These quality models can be combined with productivity model for measuring the correct productivity. These models are usually constructed in a tree-like fashion. The upper branches hold important high level quality factors such as reliability and usability. The notion of divide and conquer approach has been implemented as a standard approach to measuring software quality. Most quality models include reliability as a component factor, however, the need to predict and measure reliability has led to a separate specialization in reliability modeling and prediction.
The basic problem in reliability theory is to predict when a system will eventually fail. It includes externally observable system performance characteristics such as response times and completion rates, and the internal working of the system such as the efficiency of algorithms.
It is another aspect of quality. Here we measure the structural attributes of representations of the software, which are available in advance of execution. Then we try to establish empirically predictive theories to support quality assurance, quality control, and quality prediction.
This model can assess many different attributes of development including the use of tools, standard practices and more. It is based on the key practices that every good contractor should be using. For managing the software project, measurement has a vital role. For checking whether the project is on track, users and developers can rely on the measurement-based chart and graph.
The standard set of measurements and reporting methods are especially important when the software is embedded in a product where the customers are not usually well-versed in software terminology. This depends on the experimental design, proper identification of factors likely to affect the outcome and appropriate measurement of factor attributes.
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Software Testing Metrics: What is, Types & Example
A software metric is a measure of software characteristics which are measurable or countable. Software metrics are valuable for many reasons, including measuring software performance, planning work items, measuring productivity, and many other uses. Within the software development process, many metrics are that are all connected. Software metrics are similar to the four functions of management: Planning, Organization, Control, or Improvement. Product Metrics: These are the measures of various characteristics of the software product. The two important software characteristics are: Size and complexity of software.
Software Testing Metrics are the quantitative measures used to estimate the progress, quality, productivity and health of the software testing process. The goal of software testing metrics is to improve the efficiency and effectiveness in the software testing process and to help make better decisions for further testing process by providing reliable data about the testing process. The ideal example to understand metrics would be a weekly mileage of a car compared to its ideal mileage recommended by the manufacturer. Software testing metrics - Improves the efficiency and effectiveness of a software testing process. Software testing metrics or software test measurement is the quantitative indication of extent, capacity, dimension, amount or size of some attribute of a process or product. Example for software test measurement : Total number of defects In this tutorial, you will learn- What is Software Testing Metric?
Software and Software Process Measurement
Software Testing Metrics are the quantitative measures used to estimate the progress, quality, productivity and health of the software testing process. The goal of software testing metrics is to improve the efficiency and effectiveness in the software testing process and to help make better decisions for further testing process by providing reliable data about the testing process. The ideal example to understand metrics would be a weekly mileage of a car compared to its ideal mileage recommended by the manufacturer.
To investigate whether a deployed software process achieves its goals, some form of validation is needed. In many cases, a measurement program can provide a useful basis for such validation, providing information about performance and quality of software and software processes, and thus helping to find gap and identify improvement opportunities or needs. In this chapter, we lay the foundation for such measurement programs.
Странно, - удивленно заметил Смит. - Обычно травматическая капсула не убивает так. Иногда даже, если жертва внушительной комплекции, она не убивает вовсе. - У него было больное сердце, - сказал Фонтейн. Смит поднял брови.