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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).
Formal estimation model: The quantification step is based on mechanical processes, e.g., the use of a formula derived from historical data. Combination-based estimation: The quantification step is based on a judgmental and mechanical combination of estimates from different sources.
Model name Inherent defect count Effort required Requires exact time between failures Increasing fault rate: Weibull Finite/not fixed High NA Peak: Shooman Constant Defect Removal Rate Model Finite/fixed Low Yes Decreasing fault rate: Shooman Constant Defect Removal Rate Model Finite/fixed Low Yes Linearly Decreasing
AFCAA REVIC is a set of programs for use in estimating the cost of software development projects. [1] The Revised Enhanced Version of Intermediate COCOMO (REVIC) model is a copyrighted program available for public distribution under agreement with the REVIC developer, Ray Kile, and the U.S. Air Force Cost Analysis Agency (AFCAA).
There are several cost, schedule, and effort estimation models which use SLOC as an input parameter, including the widely used Constructive Cost Model series of models by Barry Boehm et al., PRICE Systems True S and Galorath's SEER-SEM. While these models have shown good predictive power, they are only as good as the estimates (particularly the ...
Sizing. How large is the software project being estimated (Lines of Code, Function Points, Use Cases, etc.) Technology. What is the possible productivity of the developers (capabilities, tools, practices, etc.) Effort and Schedule Calculation. What amount of effort and time are required to complete the project? Constrained Effort/Schedule ...
Object points are an approach used in software development effort estimation under some models such as COCOMO II. [1] [2]Object points are a way of estimating effort size, similar to Source Lines Of Code (SLOC) or Function Points.
The Constructive Systems Engineering Cost Model (COSYSMO) was created by Ricardo Valerdi while at the University of Southern California Center for Software Engineering. It gives an estimate of the number of person-months it will take to staff systems engineering resources on hardware and software projects.