Non-functional requirements size measurement method (NFSM) with COSMIC-FFP

Mohamad Kassab, Olga Ormandjieva, Maya Daneva, Alain Abran

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Non-functional requirements (NFRs) of software systems are an important source of uncertainty in effort estimation. Furthermore, quantitatively approaching NFR early in a project is difficult. This paper makes a step towards reducing the impact of uncertainty due to NFRs. It offers a new generic classification of the NFRs, and a NFR size measurement method (NFSM) that incorporates NFRs into the functional size quantification process. We chose the NFR framework as a vehicle to integrate NFRs into the requirements modeling process and to apply quantitative assessment procedures. Our solution proposal also rests on the functional size measurement method, COSMIC-FFP, adopted in 2003 as the ISO/IEC 19761 standard. We discuss the advantages of our approach and the open questions related to its design as well.

Original languageEnglish (US)
Title of host publicationSoftware Process and Product Measurement - International Conference, IWSM-Mensura 2007, Revised Papers
Number of pages15
StatePublished - 2008
EventInternational Conference on Software Process and Product Measurement, IWSM-Mensura 2007 - Palma de Mallorca, Spain
Duration: Nov 5 2007Nov 8 2007

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume4895 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


ConferenceInternational Conference on Software Process and Product Measurement, IWSM-Mensura 2007
CityPalma de Mallorca

ASJC Scopus subject areas

  • Theoretical Computer Science
  • General Computer Science


Dive into the research topics of 'Non-functional requirements size measurement method (NFSM) with COSMIC-FFP'. Together they form a unique fingerprint.

Cite this