Putting the developer in-the-loop: an interactive GA for software re-modularization

  • Authors:
  • Gabriele Bavota;Filomena Carnevale;Andrea De Lucia;Massimiliano Di Penta;Rocco Oliveto

  • Affiliations:
  • University of Salerno, Fisciano, SA, Italy;University of Salerno, Fisciano, SA, Italy;University of Salerno, Fisciano, SA, Italy;University of Sannio, Benevento, Italy;University of Molise, Pesche, IS, Italy

  • Venue:
  • SSBSE'12 Proceedings of the 4th international conference on Search Based Software Engineering
  • Year:
  • 2012

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Abstract

This paper proposes the use of Interactive Genetic Algorithms (IGAs) to integrate developer's knowledge in a re-modularization task. Specifically, the proposed algorithm uses a fitness composed of automatically-evaluated factors--accounting for the modularization quality achieved by the solution--and a human-evaluated factor, penalizing cases where the way re-modularization places components into modules is considered meaningless by the developer. The proposed approach has been evaluated to re-modularize two software systems, SMOS and GESA. The obtained results indicate that IGA is able to produce solutions that, from a developer's perspective, are more meaningful than those generated using the full-automated GA. While keeping feedback into account, the approach does not sacrifice the modularization quality, and may work requiring a very limited set of feedback only, thus allowing its application also for large systems without requiring a substantial human effort.