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Software Measurement and Metrics

  • Difficulty Level : Easy
  • Last Updated : 27 Dec, 2021

Software Measurement: A measurement is a manifestation of the size, quantity, amount or dimension of a particular attribute of a product or process. Software measurement is a titrate impute of a characteristic of a software product or the software process. It is an authority within software engineering. The software measurement process is defined and governed by ISO Standard. 

Need of Software Measurement: 
Software is measured to: 

  1. Create the quality of the current product or process. 
  2. Anticipate future qualities of the product or process. 
  3. Enhance the quality of a product or process. 
  4. Regulate the state of the project in relation to budget and schedule. 

Classification of Software Measurement: 
There are 2 types of software measurement: 

  1. Direct Measurement: 
    In direct measurement the product, process or thing is measured directly using standard scale. 
  2. Indirect Measurement: 
    In indirect measurement the quantity or quality to be measured is measured using related parameter i.e. by use of reference. 

A metric is a measurement of the level that any impute belongs to a system product or process. There are 4 functions related to software metrics: 

  1. Planning 
  2. Organizing 
  3. Controlling 
  4. Improving 

Characteristics of software Metrics: 

  1. Quantitative: 
    Metrics must possess quantitative nature.It means metrics can be expressed in values. 
  2. Understandable: 
    Metric computation should be easily understood ,the method of computing metric should be clearly defined. 
  3. Applicability: 
    Metrics should be applicable in the initial phases of development of the software. 
  4. Repeatable: 
    The metric values should be same when measured repeatedly and consistent in nature. 
  5. Economical: 
    Computation of metrics should be economical. 
  6. Language Independent: 
    Metrics should not depend on any programming language. 

Classification of Software Metrics: 
There are 2 types of software metrics:  

  1. Product Metrics: 
    Product metrics are used to evaluate the state of the product, tracing risks and undercovering prospective problem areas. The ability of team to control quality is evaluated. 
  2. Process Metrics: 
    Process metrics pay particular attention on enhancing the long term process of the team or organization. 
  3. Project Metrics: 
    The project matrix describes the project characteristic and execution process. 
    • Number of software developer
    • Staffing pattern over the life cycle of software
    • Cost and schedule
    • Productivity


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