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Relevance feedback Text Retrieval Conference Recommender system Relevance Tf*idf Query expansion Information filtering system Document retrieval Information science Information retrieval Science | YFilter at TREC-9 Yi Zhang Jamie Callan School of Computer Science Carnegie Mellon University Pittsburgh, PA 15232, USAAdd to Reading ListSource URL: trec.nist.govDownload Document from Source WebsiteFile Size: 66,57 KBShare Document on Facebook |