Abstract
We study the effect of semantic overlay structure on the performance of decentralized search. Semantic overlays create communities of nodes that share particular interests. In peer-to-peer systems these communities can be designed to improve the recall of search algorithms. Such communities also play a role in balancing load between agents. An examination of these two performance metrics on some basic semantic overlay topologies shows that the choice of the best decentralized search algorithm can be influenced by differing design goals. We present an extensive experimental evaluation using data sets from eDonkey and Movielens. We find that, in general, these data sets do not exhibit obvious semantic clusters of nodes. For this reason, using a best-neighbors overlay, in which nodes individually choose their neighbors, to implement search produces better recall values than using an overlay that specifically clusters nodes into groups. Using best-neighbors overlays, on the other hand, can lead to highly unbalanced load distributions, a problem avoided in clustered overlays. We also find that forwarding search queries to “friends” in best-neighbors overlays does little to improve recall while further unbalancing load distributions.
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Fessant, F.L., Handurukande, S., Kermerrec, A.M., Massoulie, L.: Clustering in peer-to-peer file sharing workloads. In: Voelker, G.M., Shenker, S. (eds.) IPTPS 2004. LNCS, vol. 3279, pp. 217–226. Springer, Heidelberg (2005)
Miller, B., Konstan, J., Riedl, J.: Pocketlens: Toward a personal recommender system. ACM Transactions on Information Systems 22, 437–476 (2004)
Cohen, E., Shenker, S.: Replication strategies in unstructured peer-to-peer networks. SIGCOMM Computer Communication Review 32, 177–190 (2002)
Chawathe, Y., Ratnasamy, S., Breslau, L., Lanham, N., Shenker, S.: Making gnutella-like p2p systems scalable. In: Proc. 2003 Conference on Applications, Technologies, Architectures, and Protocols for Computer Communications, pp. 407–418 (2003)
Cholvi, V., Felber, P., Biersack, E.: Efficient search in unstructured peer-to-peer networks. In: Proc. 16th ACM Symposium on Parallelism in Algorithms and Architectures, pp. 271–272 (2004)
Sripanidkulchai, K., Maggs, B., Zhang, H.: Efficient content location using interest-based locality in peer-to-peer systems. In: Proc. of the 22nd INFOCOM Conference (2003)
Voulgaris, S., van Steen, M.: Epidemic-style management of semantic overlays for content-based searching. In: Cunha, J.C., Medeiros, P.D. (eds.) Euro-Par 2005. LNCS, vol. 3648, pp. 1143–1152. Springer, Heidelberg (2005)
Yang, B., Vinograd, P., Garcia-Molina, H.: Evaluating guess and non-forwarding peer-to-peer search. In: Proc. 24th Int’l Conference on Distributed Computing Systems, pp. 209–218 (2004)
Cohen, E., Fiat, A., Kaplan, H.: Associative search in peer-to-peer networks: Harnessing latent semantics. In: Proc. of the 22nd INFOCOM Conference (2003)
Crespo, A., Garcia-Molina, H.: Semantic overlay networks for p2p systems. Technical report, Computer Science Department, Stanford University (2002)
Garbacki, P., Epema, D., van Steen, M.: A Two-Level Semantic Caching Scheme for Super-Peer Networks. In: Proc. IEEE 10th Int’l Workshop on Web Content Caching and Distribution (2005)
Nejdl, W., Wolpers, M., Siberski, W., Schmitz, C., Schlosser, M., Brunkhorst, I., Löser, A.: Super-peer-based routing and clustering strategies for rdf-based peer-to-peer networks. In: Proc. 12th Int’l World Wide Web Conference, pp. 536–543 (2003)
Ogston, E., van Steen, M., Brazier, F.: Group formation among decentralized autonomous agents. Applied Artificial Intelligence 18, 953–970 (2004)
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 2008 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Ogston, E. (2008). An Analysis of Interest-Community Facilitated Peer-to-Peer Search. In: Joseph, S., Despotovic, Z., Moro, G., Bergamaschi, S. (eds) Agents and Peer-to-Peer Computing. AP2PC 2006. Lecture Notes in Computer Science(), vol 4461. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-79705-0_9
Download citation
DOI: https://doi.org/10.1007/978-3-540-79705-0_9
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-79704-3
Online ISBN: 978-3-540-79705-0
eBook Packages: Computer ScienceComputer Science (R0)