The Impact of Individual Assumptions on Functional Size Measurement

Turetken O., Top Ö., Ozkan B., Demirors O.

Joint Meeting of the International Workshop on Software Measurement (IWSM)/MetriKon/Mensura 2008, Munich, Germany, 18 - 20 November 2008, vol.5338, pp.155-169 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 5338
  • Doi Number: 10.1007/978-3-540-89403-2_14
  • City: Munich
  • Country: Germany
  • Page Numbers: pp.155-169
  • Keywords: Functional Size Measurement, COSMIC FSM, IFPUG FPA, MkII FPA
  • Middle East Technical University Affiliated: Yes


Having been improved, evolved and standardized by the Organization for Standardization (ISO), Functional Size Measurement (FSM) methods have become widely used. However, the measurers still face difficulties in measuring the software products which include unconventional components. We faced the challenge to observe if different interpretations or assumptions of the measurers cause significant differences in the measurement results. In this study, we present the results of a multiple case study we conducted in order to observe the impact of individual assumptions for well known FSM methods.