Towards an Early Software Effort Estimation Based on Functional and Non-Functional Requirements

Authors:
Mohamed Kassab;Maya Daneva;Olga Ormandjieva
Affiliations:
Concordia University, Canada;University of Twente, The Netherlands;Concordia University, Canada
Venue:
IWSM '09 /Mensura '09 Proceedings of the International Conferences on Software Process and Product Measurement
Year:
2009

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Abstract

The increased awareness of the non-functional requirements as a key to software project and product success makes explicit the need to include them in any software project effort estimation activity. However, the existing approaches to defining size-based effort relationships still pay insufficient attention to this need. This paper presents a flexible, yet systematic approach to the early requirements-based effort estimation, based on Non-Functional Requirements ontology. It complementarily uses one standard functional size measurement model and a linear regression technique. We report on a case study which illustrates the application of our solution approach in context and also helps evaluate our experiences in using it.