View source for COSYSMO

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.  Initially developed in 2002, the model now contains a calibration data set of more than 50 projects provided by major aerospace and defense companies such as [[Raytheon]], [[Northrop Grumman]], [[Lockheed Martin]], [[Science Applications International Corporation|SAIC]], [[General Dynamics]], and [[BAE Systems]].

Similar to its predecessor [[COCOMO]], COSYSMO computes effort (and cost) as a function of system functional size and adjusts it based on a number of environmental factors related to systems engineering.

COSYSMO's central cost estimating relationship, or CER is of the form:
<math>PM_{NS}=A \times \text{size}^E \times \prod^n_{i=1} EM_i</math>

where "Size" is one of four size additive size drivers, and EM represents one of fourteen multiplicative effort multipliers.

==See also==
* [[Comparison of development estimation software]]
* [[Software development effort estimation]]

==Further reading==
* Valerdi, R., Boehm, B., Reifer, D., COSYSMO: A Constructive Systems Engineering Cost Model Coming Age, 13th INCOSE Symposium, July 2003, Crystal City, VA.
* Valerdi, R., The Constructive Systems Engineering Cost Estimation Model (COSYSMO), University of Southern California, May 2005.
* Valerdi, R., The Constructive Systems Engineering Cost Model (COSYSMO): Quantifying the Costs of Systems Engineering Effort in Complex Systems, [[VDM Verlag]], 2008.

==External links==
* [http://cosysmo.mit.edu COSYSMO]
* [http://www.softstarsystems.com/COSYSMO.htm SystemStar Tool]
* [http://www.pricesystems.com/news/INSight/INSightMar2006.html True COSYSMO]
* [https://web.archive.org/web/20160310065239/http://galorath.com/seer-for-systems-engineering/ SEER for Systems Engineering]

[[Category:Software engineering costs]]


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