Sizing Use Cases: How to Create a Standard Metrical Approach

  • Authors:
  • Brian Henderson-Sellers;Didar Zowghi;T. Klemola;S. Parasuram

  • Affiliations:
  • -;-;-;-

  • Venue:
  • OOIS '02 Proceedings of the 8th International Conference on Object-Oriented. Information Systems
  • Year:
  • 2002

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Abstract

Use-case modelling provides a means of specifying external features of a system during requirements elicitation. In principle, use cases can be used to size the system about to be built but, for that, a standard format for their documentation is required. Furthermore, gathering use-case metrics requires a software development process that produces complete use-case descriptions in a repeatable way. Here, we set out the requirements for such a standardization so that use cases can be metricated. Once accomplished, it is possible to evaluate the important research questions of whether use-case attributes such as size and complexity can be controlled and whether use-case metrics are sufficiently rigorous for estimating effort. Finally, we note that this added rigour applied to use cases should improve the consistency and quality of communication between client and developer, helping to ensure that the right system is built.