CREWS-SAVRE: Scenarios for Acquiring and Validating Requirements

  • Authors:

  • N. A. M. Maiden

  • Affiliations:

  • Centre for HCI Design, City University, Northampton Square, London, UK. E-mail: Email: N.A.M.Maiden@city.ac.uk

  • Venue:
  • Automated Software Engineering
  • Year:
  • 1998

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Abstract

This paper reports research into semi-automatic generationof scenarios for validating software-intensive system requirements.The research was undertaken as part of the ESPRIT IV 21903 ‘CREWS’long-term research project. The paper presents the underlyingtheoretical models of domain knowledge, computational mechanisms anduser-driven dialogues needed for scenario generation. It describeshow CREWS draws on theoretical results from the ESPRIT III 6353‘NATURE’ basic research action, that is object system models whichare abstractions of the fundamental features of different categoriesof problem domain. CREWS uses these models to generate normal coursescenarios, then draws on theoretical and empirical research fromcognitive science, human-computer interaction, collaborative systemsand software engineering to generate alternative courses for thesescenarios. The paper describes a computational mechanism for derivinguse cases from object system models, simple rules to link actions ina use case, taxonomies of classes of exceptions which give rise toalternative courses in scenarios, and a computational mechanism forgeneration of multiple scenarios from a use case specification.