DescriptionThe goal of this research is to realize a Web retrieval engine using a P2P architecture. This aims at providing a richer set of retrieval mechanisms allowing to tailor more targetted and personalized Web search engines, providing more recent retrieval results and scaling with semantic complexity. We are addressing both link-based and text-based ranking methods. For link-based ranking we proposed and evaluated algebraic methods for decentralized computation of link-based rankings . We addressed the problem of how to utilize rankings derived from Web structure and navigation . Current efforts address the efficient implementation of text retrieval mechanisms in a decentralized architecture and integration in a P2P architecture .
Updated November 21, 2007
 K. Aberer, J. Wu: A Framework for Decentralized Ranking in Web Information Retrieval. APWeb 2003: 213-226.
 J. Wu, K. Aberer: Swarm Intelligent Surfing in the Web. ICWE 2003: 431-440.
 J. Wu, K. Aberer, "Semantic Web Graph Implied by User Preferred Activities", ACM SIGIR 2003 Workshop on Implicit Measures of User Interests and Preferences, Friday, August 1, 2003, Toronto, Canada.
 J. Wu, K. Aberer, "Incrementally Ranking Ephemeral Web Documents in Search Engines", ACM SIGIR MF/IR 2003, SIGIR 2003 Workshop on Mathematical/Formal Methods in Information Retrieval, August 1, 2003, Toronto, Canada.
 K. Aberer, F. Klemm, M. Rajman, J. Wu: "An Architecture for Peer-to-Peer Information Retrieval", 27th Annual International ACM SIGIR Conference (SIGIR 2004), Workshop on Peer-to-Peer Information Retrieval, Sheffield, UK, July 29, 2004.
 J. Wu, K. Aberer: "Using SiteRank for decentralized computation of Web document ranking", (best student paper award), Adaptive Hypermedia and adaptive Web-based Systems, LNCS 3137: 265-274, 2004.
 K. Aberer, J. Wu,"Towards a Common Framework for Peer-to-Peer Web Retrieval", From Integrated Publication and Information Systems to Virtual Information and Knowledge Environments 2005: 138-151.
 J. Wu, K. Aberer: "Using a Layered Markov Model for Distributed Web Ranking Computation", ICDCS 2005.
 F. Klemm, K. Aberer, "Aggregation of a Term Vocabulary for Peer-to-Peer Information Retrieval: a DHT Stress Test", Third International Workshop on Databases, Information Systems and Peer-to-Peer Computing (DBISP2P 2005), Trondheim, Norway, August 28-29, 2005.
 W. Buntine, K. Aberer, I. Podnar, M. Rajman, "Opportunities from Open Source Search", (invited paper), The 2005 IEEE/WIC/ACM International Conference on Web Intelligence (WI'05), Sep 19-22, Compiégne University of Technology, France, 2005.
 T. Luu, F. Klemm, I. Podnar, M. Rajman, K. Aberer, "ALVIS Peers: A Scalable Full-text Peer-to-Peer Retrieval Engine", Workshop on Information Retrieval in Peer-to-Peer Networks (P2PIR 2006), collocated with the ACM Fifteenth Conference on Information and Knowledge Management (CIKM, 2006), November 11, 2006.
 I. Podnar, T. Luu, M. Rajman, F. Klemm, K. Aberer, "A Peer-to-Peer Architecture for Information Retrieval Across Digital Library Collections", European conference on research and advanced technology for digital libraries (ECDL 2006), Alicante, Spain, September 2006.
 G. Skobeltsyn, K. Aberer, "Distributed Cache Table: Efficient Query-Driven Processing of Multi-Term Queries in P2P Networks", Workshop on Information Retrieval in Peer-to-Peer Networks (P2PIR 2006), collocated with the ACM Fifteenth Conference on Information and Knowledge Management (CIKM, 2006), November 11, 2006.
 K. Aberer, F. Klemm, T. Luu, I. Podnar, M. Rajman,"Beyond term indexing: A P2P framework for Web information retrieval", Informatica , Vol. 30, Nr. 2, pp. 153-161, 2006.
 I. Podnar, M. Rajman, T. Luu, F. Klemm, K. Aberer, " Scalable Peer-to-Peer Web Retrieval with Highly Discriminative Keys ", ICDE 2007, The 23rd International Conference on Data Engineering (ICDE), April 16-20, 2007, Istanbul, Turkey, 2007.
 G. Skobeltsyn, T. Luu, I. Podnar Zarko, M. Rajman and K. Aberer: " Query-Driven Indexing for Peer-to-Peer Text Retrieval " , (Poster), 16th International World Wide Web Conference (WWW'2007), Banff, Canada, May 8-12, 2007.
 G. Skobeltsyn, T. Luu, I. Podnar Zarko, M. Rajman and K. Aberer: " Query-Driven Indexing for Scalable Peer-to-Peer Text Retrieval ", Infoscale: the Second International Conference on Scalable Information Systems, Suzhou, China, June 6-8, 2007.
 G. Skobeltsyn, T. Luu, I. Podnar Zarko, M. Rajman and K. Aberer, " Web Text Retrieval with a P2P Query-Driven Index " , 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Amsterdam, The Netherlands, July 23-27, 2007 .