The COCOMO II method (Boehm et al., 1995) is more than just a refinement of the original COCOMO model (Boehm, 1981). It represents a rethinking of the problem of software project estimation together with an upgrade to reflect developments that have occurred in software engineering over the last 20 years. One concept this method is built on has been around for a couple of millennia: The closer you get to the end of a journey (or project), the more accurate will be the prediction of your arrival time (or total project cost).
COCOMO II treats the problem in three stages:
Application composition model
Early design model
This approach employs parametric equations. The earliest form of this type of equation might have been ...