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PATROL-F – A Comprehensive Reputation-Based Trust Model with Fuzzy Subsystems

  • Ayman Tajeddine
  • Ayman Kayssi
  • Ali Chehab
  • Hassan Artail
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4158)

Abstract

In this paper, we present PATROL-F, a comprehensive model for reputation-based trust incorporating fuzzy subsystems to protect interacting hosts in distributed systems. PATROL-F is the fuzzy version of our previous model PATROL, and aims at achieving a truly unique model incorporating various concepts that are important for the calculation of reputation values and the corresponding trust decisions. Among the incorporated concepts are direct experiences and reputation values, the credibility of a host to give recommend-dations, the decay of information with time based on a dynamic decay factor, first impressions, and a hierarchy of host systems. The model also implements the concepts of similarity, popularity, activity, and cooperation among hosts. In addition, PATROL-F includes fuzzy subsystems to account for humanistic and subjective concepts such as the importance of a transaction, the decision in the uncertainty region, and setting the value of result of interaction. We present simulations of PATROL-F and show its correctness and reliability.

Keywords

Fuzzy Logic Trust Model Uncertainty Region Target Host Good Host 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Ayman Tajeddine
    • 1
  • Ayman Kayssi
    • 1
  • Ali Chehab
    • 1
  • Hassan Artail
    • 1
  1. 1.Department of Electrical and Computer EngineeringAmerican University of BeirutBeirutLebanon

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