Cost estimation in software engineering: Difference between revisions

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TheCost costestimation ofin software engineering is mainlytypically fromconcerned developerwith timethe financial spend on the effort to develop and test the software, butthis can also beinclude fromrequirements review, maintenance, training, managing and buying extra equipment, servers and software. Many methods have been developed for estimating software costs for a given project.

== History ==

The first software was written on punch cards, so estimating cost required guessing the amount of punchcards needed.

== Methods ==

Methods for estimation in software engineering include these principles:

*[[Analysis effort method]]

*[[COCOMO]], the first version known as COCOMO 81 and the second as COCOMO™ II

*[[COSYSMO]]

*[[Evidence-based Scheduling]] Refinement of typical agile estimating techniques using minimal measurement and total time accounting.

*[[Function point analysis|Function Point Analysis]]

*[[Estimation theory|Parametric Estimating]]

*[[Extreme Programming PracticesExtreme_Programming_Practices#Planning gamePlanning_game|The Planning Game]] (from [[Extreme Programming]])

*[[ITK method]], also known as Method CETIN

*[[Proxy-based estimating]] (PROBE) (from the [[Personal Software Process]])

*[[Program Evaluation and Review Technique]] (PERT)

*[[Price to win]]<ref>{{Cite book |title=The Art of Software Cost Estimation |pages=329}}</ref>

*[[Putnam model]], also known as SLIM

*[[PRICE Systems]] Founders of Commercial Parametric models that estimates the scope, cost, effort and schedule for software projects.

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*[[Weighted Micro Function Points]] (WMFP)

*[[Wideband Delphi]]

Most cost software development estimation techniques involve estimating or measuring software size first and then applying some knowledge of historical of cost per unit of size. Software size is typically sized in [[Source lines of code|SLOC]], [[Function Point]] or [[Burn down chart|Agile story points]].

==See also==

* [[Software development effort estimation]]

* [[Software metric]]

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* [[Risk]]

* [[Comparison of development estimation software]]

==References==

{{reflist}}

==External links==

* [https://doc.lagout.org/science/0_Computer%20Science/9_Others/9_Misc/Applied%20Software%20Project%20Management.pdf Software Estimation chapter] from O'Reilly, ''Applied Software Project Management''

*Article [http://www.methodsandtools.com/archive/archive.php?id=25 Estimating With Use Case Points] from [http://www.methodsandtools.com/ ''Methods & Tools]''

* [http://www.stellman-greene.com/ch03 Software Estimation chapter] from [http://www.stellman-greene.com Applied Software Project Management] (O'Reilly)

*Article [http://www.methodsandtools.com/archive/archive.php?id=25 Estimating With Use Case Points] from [http://www.methodsandtools.com/ Methods & Tools]

* [http://softwaresurvival.blogspot.com/2006/11/dynamics-of-effort-estimation-in-most.html The Dynamics of Software Projects Estimation]

* [http://www.construx.com/Page.aspx?nid=297 Resources on Software Estimation] from [[Steve McConnell]]

[[Category:Software engineering costs|*]]

* Article [http://www.gem-up.com/PDF/SK903V1_WP_Estimating.pdf Estimating techniques throughout the SDLC]

* [http://www.nomitech.eu Top Down, BIM and Parametric Estimating Software]

* [http://www.bfpug.com.br/Artigos/UCP/Banerjee-UCP_An_Estimation_Approach.pdf Definition of Use Case Points method (UCP)]

* Roy K. Clemmons, [http://www.bfpug.com.br/Artigos/UCP/Clemmons-Project_Estimation_with_UCP.pdf] Project Estimation With Use Case Points by Roy Clemmons]

* [COCOMO™ II http://cost.jsc.nasa.gov/COCOMO.html]

* Article [httphttps://wwwmassmediagroup.gem-up.compro/PDF/SK903V1_WP_Estimating.pdf Estimating techniques throughout the SDLC]

* [http://www.bfpug.com.br/Artigos/UCP/Clemmons-Project_Estimation_with_UCP.pdf] Project Estimation With Use Case Points by Roy Clemmons

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[[Category:Software engineering costs|*]]