The Software Equation

The Software Equation

The software equation shown below is dynamic multivariable estimation model. It
assumes a specific distribution of effort over the life of the software development project
and is derived from productivity data collected for over 4000 projects.

E = [LOC x B0.333/P]3 x (1/t4)

Where:

• E – effort in person months or person years
• t – project duration in months or years
• B – special skill factor 

  – Increases slowly as the need for integration, testing, QA, documentation,
  and management skills grow

• P – productivity parameter 

  – Overall process maturity and management practices

  – The extent to which good SE practices are used

  – The level of programming language used

  – The state of the software environment

  – The skills and experience of the software team

  – The complexity of the application