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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 11    
Website: http://www.ijser.org
scirp IJSER >> Volume 2, Issue 11, November 2011
A Comparative study of COCOMO II and Putnam models of Software Cost Estimation
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Author(s)
T.N.Sharma, Anil Bhardwaj, Anita Sharma
KEYWORDS
Cost Estimation, COCOMO II, Effort estimation Putnam Model, scale factors, effort multipliers, cost parameters
ABSTRACT
Project planning is one of the most important activities in software projects. Poor planning often leads to project faults and dramatic outcomes for the project team. If cost and effort are determined pessimistic in software projects, suitable occasions can be missed; whereas optimistic predictions can be caused to some resource losing. Nowadays software project managers should be aware of the increasing of project failures. The main reason for this problem is imprecision of the estimation. The accurate prediction of software development costs may have a large economic impact. As a consequence, considerable research attention is now directed to understand better the software development process. The objective of this paper is to provide an example base study of two software cost estimating models (COCOMO II and PUTNAM). By the case study, it is observed that Putnam model is very sensitive to the development time: decreasing the development time can greatly increase the person-months needed for development whereas COCOMO II is more realistic because it is based on functions points and object points of the project.
References
1. Anil Bhardwaj, T.N.Sharma, Anita Bhardwaj(2010), Soft-ware Cost Estimation using COCOMO II, Journal of Ma-thematics and System Sciences, V.6(1) pp.14-22.

2. Barry Boehm et. al (1998), Software Development Cost Estimation Approaches – A Survey, IBM Research

3. T.N.Sharma, Anil Bhardwaj, Jagdish Prasad(2010), On Software Cost Estimation, Advances in Information Theory and Operations Research, pp.329-337, Om Parkash (Ed.)

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