By C. J. ‘Keith’ van Rijsbergen (auth.), David E. Losada, Juan M. Fernández-Luna (eds.)

Welcome to Santiago de Compostela! we're happy to host the twenty seventh Annual EuropeanConferenceonInformationRetrievalResearch(ECIR2005)onits?rst stopover at to Spain. those court cases comprise the refereed complete papers and poster abstracts p- sented at ECIR 2005. This convention was once at the start validated by means of the Infor- tion Retrieval expert workforce of the British machine Society (BCS-IRSG) less than the identify “Annual Colloquium on details Retrieval study. ” The colloquium was once held within the uk every year until eventually 1998, while the development was once prepared in Grenoble, France. on the grounds that then the convention venue has alternated among the uk and Continental Europe, re?ecting the turning out to be ecu orientation of ECIR. for a similar cause, in 2001 the development used to be renamed “European convention on info Retrieval study. ” In - cent years, ECIR has endured to develop and has turn into the foremost ecu discussion board for the dialogue of study within the ?eld of data retrieval. ECIR 2005 was once held on the Technical college of Engineering of the college of Santiago de Compostela, Spain. when it comes to submissions, ECIR 2005 used to be a record-breaking good fortune, on account that 124 complete papers have been submitted in line with the decision for papers. This used to be a pointy elevate from the one hundred and one submissions got for ECIR 2003, which was once the main winning ECIR when it comes to submissions. ECIR 2005 verified additionally a choice for posters, and forty-one posters the place submitted. Paper and poster submissions have been bought from throughout Europe and extra a?eld, together with North the US, South the United States, Asia and Australia, that is a transparent indicationofthegrowingpopularityandreputationoftheconference.

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Extra info for Advances in Information Retrieval: 27th European Conference on IR Research, ECIR 2005, Santiago de Compostela, Spain, March 21-23, 2005. Proceedings

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It not only provides decent hit rate, but also is small enough to add only negligible overhead. 3 System Design From our analyses in section 2, we show that interest-based locality exist in Kazaa traffic. Queries should be directed to a focused set of nodes instead of flooding to all the nodes. We propose a history-based scheme to meet this goal. With very little bookkeeping of the past query statistics, each node is able to identify a subset of nodes that can satisfy its future queries with high probability.

Report, University of California, Berkeley, 2001. 14. , and Druschel, P. Pastry: Scalable, Distributed Object Location and Routing for Large-scale Peer-to-peer Systems. In Proceedings of MIDDLEWARE 2001, November 2001. 15. Konrad, R. com. html, October 2000. 16. , Shenker, S. Range Queries over DHTs. In Intel Research Technical Report, IRB-TR-03-011, June 2003. 17. KaZaA File Sharing Network. KaZaA. com/, 2002. 18. , and Foster, I. Mapping the Gnutella Network – Macroscopic Properties of Large-scale P2P Networks.

Peer-to-peer file sharing has become a very popular Internet application. P2P systems such as Gnutella and Kazaa work well when the number of peers is small. Their performances degraded significantly when the number of peers scales. In order to overcome the scalability problem, numerous research groups have experimented with different approaches. We conduct a novel evaluation study on Kazaa traffic focusing on the interest-based locality. Our analysis shows that strong interest-based locality exist in P2P systems and can be exploited to improve performance.

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