Can Patterns Improve i* Modeling? Two Exploratory Studies

  • Markus Strohmaier
  • Jennifer Horkoff
  • Eric Yu
  • Jorge Aranda
  • Steve Easterbrook
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5025)


A considerable amount of effort has been placed into the investigation of i* modeling as a tool for early stage requirements engineering. However, widespread adoption of i* models in the requirements process has been hindered by issues such as the effort required to create the models, coverage of the problem context, and model complexity. In this work, we explore the feasibility of pattern application to address these issues. To this end, we perform both an exploratory case study and initial experiment to investigate whether the application of patterns improves aspects of i* modeling. Furthermore, we develop a methodology which guides the adoption of patterns for i* modeling. Our findings suggest that applying model patterns can increase model coverage, but increases complexity, and may increase modeling effort depending on the experience of the modeler. Our conclusions indicate situations where pattern application to i* models may be beneficial.


The i* Framework Model Patterns Modeling Effort Model Coverage Model Complexity 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Markus Strohmaier
    • 1
  • Jennifer Horkoff
    • 2
  • Eric Yu
    • 3
  • Jorge Aranda
    • 2
  • Steve Easterbrook
    • 2
  1. 1.Knowledge Management InstituteGraz University of Technology and Know-CenterGrazAustria
  2. 2.Department of Computer ScienceUniversity of TorontoTorontoCanada
  3. 3.Faculty of Information StudiesUniversity of TorontoTorontoCanada

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