Improving search in unstructured P2P systems: intelligent walks (I-walks)

  • Authors:
  • Francis Otto;Song Ouyang

  • Affiliations:
  • School of Information Science and Engineering, Central South University, Changsha, Hunan, P.R. China;School of Information Science and Engineering, Central South University, Changsha, Hunan, P.R. China

  • Venue:
  • IDEAL'06 Proceedings of the 7th international conference on Intelligent Data Engineering and Automated Learning
  • Year:
  • 2006

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Abstract

Random Walks (RW) search technique can greatly reduce bandwidth production but generally fails to adapt to different workloads and environments. A Random Walker can’t learn anything from its previous successes or failures, displaying low success rates and high latency. In this paper, we propose Intelligent Walks (IW) search mechanism – a modification of RW, exploiting the learning ability and the shortest path distance of node neighbors. A node probes its neighbors before forwarding the query. The probe is to find a candidate that has the shortest distance from the query source and/or has ever seen before the object that is going to be sent. If there isn’t such candidate, then a node is chosen as usual (at random). The experimental results demonstrate that new method achieves better performance than RW in terms of success rate.