### Instruction:
What is COCOMO

### Input:
The Constructive Cost Model (COCOMO) is a procedural software cost estimation model developed by Barry W. Boehm. The model parameters are derived from fitting a regression formula using data from historical projects (63 projects for COCOMO 81 and 163 projects for COCOMO II).

### Response:
COCOMO is a software cost/effort estimation tool built on regression algorithm