Adaptive Probabilistic Search for Peer-to-Peer Networks

TitleAdaptive Probabilistic Search for Peer-to-Peer Networks
Publication TypeConference Papers
Year of Publication2003
AuthorsTsoumakos D, Roussopoulos N
Conference NamePeer-to-Peer Computing, IEEE International Conference on
Date Published2003///
PublisherIEEE Computer Society
Conference LocationLos Alamitos, CA, USA
ISBN Number0-7695-2023-5

Peer-to-Peer networks are gaining increasing attention from both the scientific and the large Internet user community. Popular applications utilizing this new technology offer many attractive features to a growing number of users. At the heart of such networks lies the search algorithm. Proposed methods either depend on the network-disastrous flooding and its variations or utilize various indices too expensive to maintain. In this paper, we describe an adaptive, bandwidth-efficient algorithm for search in unstructured Peer-to-Peer networks, the Adaptive Probabilistic Search method (APS). Our scheme utilizes feedback from previous searches to probabilistically guide future ones. It performs efficient object discovery while inducing zero overhead over dynamic network operations. Extensive simulation results show that APS achieves high success rates, increased number of discovered objects, very low bandwidth consumption and adaptation to changing topologies.