Estimate Requirements Effort (Process Notes 7.3.3)

You would use this approach if you have not identified event-related clusters of requirements. Estimate the effort using Albrecht function points. System experience from other projects run under similar conditions provides input regarding how long it took to develop a similar event under similar conditions. This input, if you have it, helps you to weight the estimates more accurately. Look for the following types of system experience:

• Developer experience

• Management experience

• Stakeholder experience

• Experience with the intended technology

If you have built any prototypes, then you can use the prototyping metrics as input when estimating the effort necessary for similar events within the system.

Requirement effort estimates = {requirement ID + estimated function points}

+ total estimated function points for all requirements

+ estimate of what effort a function point means in this environment

Diagram 7.4. Publish Reviewed Specification