How to Improve the Calibration of Cost Models

Authors:
Nader B. Ebrahimi
Affiliations:
Northern Illinois Univ., DeKalb
Venue:
IEEE Transactions on Software Engineering
Year:
1999

Citing 7
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Abstract

One of software engineering's longstanding problems is to estimate the cost of a software project. Using the volume or size of a program to estimate the cost is a common practice in many software developing organizations. However, in many situations one is unable to observe the value of this variable at the beginning of the project; one has to estimate it. In this paper we introduce a fairly general model which permits a surrogate or a proxy variable to be observed instead of the actual size. Under this model we obtain estimation of software cost at the given value of a surrogate variable. Confidence interval is also provided under this model.