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Published in:
Why Software Effort Estimation? Read chapter Read first chapter

2013 | OriginalPaper | Chapter

7. Usage Scenarios of a CoBRA Model

Author : Adam Trendowicz

Published in: Software Cost Estimation, Benchmarking, and Risk Assessment

Publisher: Springer Berlin Heidelberg

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Abstract

The CoBRA method has been designed to provide a project decision maker with comprehensive support regarding estimating, controlling, and managing project effort. The CoBRA model can be used for a number of software estimation purposes.

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Appendix
Available only for authorised users
Footnotes
1
In risk-driven estimation with CoBRA, we use the term risk as a synonym for probability. In the risk management domain, risk is defined as the composition of two elements: the probability of an event and the size of (negative) effects of the event.
 
2
The 25th, 50th, and 75th percentiles are referred to as lower, middle, and upper quartile. The middle quartile represents the median.
 
3
These percentages may seem high, but it should be remembered that nominal projects never occur in practice and would consume very low and, at any rate, unrealistic effort, hence the large effort overhead percentages.
 
4
We define risk exposure as the product of the probability of an undesired event and the potential loss if this event occurs. In our case, the undesired event is a project exceeding a certain effort overhead, and potential loss is the effort overhead.
 
5
In practice, CoBRA can also be applied to model the effort of service-oriented software projects. In contrast to product development (product-oriented) projects, we would then refer to service efficiency instead of development productivity.
 
Metadata
Title
Usage Scenarios of a CoBRA Model
Author
Adam Trendowicz
Copyright Year
2013
Publisher
Springer Berlin Heidelberg
Book
Software Cost Estimation, Benchmarking, and Risk Assessment

Print ISBN: 978-3-642-30763-8

Electronic ISBN: 978-3-642-30764-5

Copyright Year: 2013

DOI
https://doi.org/10.1007/978-3-642-30764-5_7

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