April 2016
Intermediate to advanced
356 pages
11h 28m
English
Content preview from COSMIC Function Points
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Background and Overview of the COSMIC-ISO 19761 ◾ 31
© 2011 by Taylor & Francis Group, LLC
1.2.4 General Problems of Functional Size Measurement
According to the literature, functional size measurement also means dealing with
general problems.
Kemerer (1997, p. 27) quotes Pressmann: “e Function Point metric, like LOC,
is relatively controversial…. Opponents claim that the method requires some ‘sleight
of hand’ in that computation is based on subjective, rather than objective, data.”
Capers Jones found that the “variants in FP counting methodologies can result
in variances of up to ±50%” (Jones, 1997, p. 24), and G. Low and D. R. Jeery
published the statement that “within organizations the variation in Function Point
counts about the mean ...
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