Trust-based Testbed for P2P digital library

Abstract

Retrieving relevant information from trust-based Peer-to-Peer (P2P) networks is a challenging research task.  The users on P2P networks endeavor to ensure that the peers have to provide guaranteed relevant information (or documents) for their information needs.  Recent researches in evaluating the trustworthiness or even the reputation of peers lack a well-formulated testbed.  As such, building a robust testbed for evaluating trustworthy P2P networks motivates to propose a ground truth testbed as a contribution in P2P systems.  In this paper, a trust-based testbed is developed especially in P2P digital libraries using TREC WT10g collection which has been used for evaluation in many P2P networks.  The testbed contains a set of peers of trustworthy values for each peer that is estimated using peer rank approach.  The statistical factors such as the distribution of peer trustworthiness, distribution of relevant documents and the location of relevant documents within each setting, and the importance of proposed testbed to reach 100% Recall in information retrieval are analyzed.  The results are compared with two well-known testbeds.