Estimate technique of man-hour period of software development. Doctor Vally Boehm (Barry Boehm) lectured in 1981.

In the number of cord/code lines where the software which is developed concretely is expected, hybridizing the correction coefficient such as ability of the engineer and reliability of request (nominal man-hour × effort factor), the man-hour which is necessary for development, period, the necessary personnel, productivity is calculated. It is said that it cannot be influenced by the difference of mounted language, can calculate objective numerical value. In addition concerning the numerical formula model of the basis, the application result in actual project is fed back, minute conversion is repeated.

But maturity and development test verification of development ability of the whole organization are repeated with COCOMO in addition to estimate of analysis design process being impossible, there was a problem that for "it repeats and is not suitable opening departure project". Then former COCOMO is expanded,function pointmethodandCMM concept are gathered, COCOMO II which actualizes more accurate man-hour calculation is lectured.

Boehm himself, you write the case which applies COCOMO II to the repetitive opening departure style like RationalUnifiedProcess (RUP) in "Software Cost Estimation With Cocomo II". As for the manual of COCOM IIfrom Web sight ofUniversity of Southern California available.