Towards a Catalogue of Patterns for Defining Metrics over i* Models

  • Authors:
  • Xavier Franch;Gemma Grau

  • Affiliations:
  • Universitat Politècnica de Catalunya (UPC), Barcelona, Spain 08034;Universitat Politècnica de Catalunya (UPC), Barcelona, Spain 08034

  • Venue:
  • CAiSE '08 Proceedings of the 20th international conference on Advanced Information Systems Engineering
  • Year:
  • 2008

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Abstract

Metrics applied at the early stages of the Information Systems development process are useful for assessing further decisions. Agent-oriented models provide descriptions of processes as a network of relationships among actors and their analysis allows discerning whether a model fulfils some required properties, or comparing models according to some criteria. In this paper, we adopt metrics to drive this analysis and we propose the use of patterns to design these metrics, with emphasis in their definition over i* models. Patterns are organized in the form of a catalogue structured along several dimensions, and expressed using a template. The patterns and the metrics are written using OCL expressions defined over a UML conceptual data model for i*. As a result, we promote reusability improving the metrics definition process in terms of accuracy and efficiency of the process.