Conceptual Association of Functional Size Measurement Methods

The May issue of the IEEE journal included an article on a unified method of counting function points.  The authors discuss the conceptual similarities and differences between functional size measurement methods and introduce a model for unification. They call it the “Unified Model.”

 They explored resolving the differences between the IFPUG counting (predominant method), the COSMIC counting rules (gaining popularity, primarily in Europe), and Mark II function points (which I don’t know of anyone using). For full disclosure, Galorath’s Ton Dekkers  is the president of NESMA, the force behind COSMIC and Galorath has a relationship with IFPUG as well.  These were the three functional sizing methods made into ISO standards.  From my understanding ISO chose three methods and assumed the market would decide which were useful. 

Seems to be a well written paper but we (and I am sure others) have been able to convert from method to method with much simpler approaches.

Related posts:

1. COSMIC Function Points In SEER SEER for Software supports the COSMIC function point estimation counting rules as well as traditional IFPUG and others and has...
2. Have We Lost Our Ability to Estimate Software Size I really enjoyed Galorath’s David DeWitt’s article “Have We Lost Our Ability to Estimate Software Size, AKA I’ve Been Slimed”,...
3. Have We Lost Our Ability to Estimate Software Size? Following is an update to Galorath’s David DeWitt’s article on software sizing: Have We Lost Our Ability to Estimate Software Size?...
4. Capture Recapture Method Of Estimating Latent Defects I recently saw a fascinating paper on capture-recapture method of estimating defects by Joseph R. Scholield.  He quoted a number...
5. 1990 IEEE Article On Measurement I forgot about this article published on IEEE in 1990.. sizing, metrics, measurement.. lessons learned and forecasting the future… The...

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