the effect of correlation coefficients on communities of recommenders neal lathia, stephen hailes, licia capra department of computer science university college london [email protected]ACM SAC TRECK, Fortaleza, Brazil: March 2008 Trust, Recommendations, Evidence and other Collaboration Know-how
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the effect of correlation coefficients on
communities of recommenders
neal lathia, stephen hailes, licia capradepartment of computer science
J. Herlocker, J. Konstan, L. Terveen, and J. Riedl. Evaluating collaborative filtering recommender systems. In ACM Transactions on Information Systems, volume 22, pages 5–53. ACM Press, 2004.
S.M. McNee, J. Riedl, and J.A. Konstan. Being accurate is not enough: How accuracy metrics have hurt recommender systems. In Extended Abstracts of the 2006 ACM Conference on Human Factors in Computing Systems. ACM Press, 2006.
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b) is there something wrong with the dataset?
c) is user-similarity not strong enough to capture the best recommender relationships in
the graph?
one proposal…
N. Lathia, S. Hailes, L. Capra. Trust-Based Collaborative Filtering. To appear In IFIPTM 2008: Joint iTrust and PST Conferences on Privacy, Trust management and Security. Trondheim, Norway. June 2008.
is modelling filtering as a trust-management problem a potential solution?
once we do that, more questions arise…
what other graph properties emerge from kNN collaborative filtering?
how does the graph evolve over time?
current work
N. Lathia, S. Hailes, L. Capra. Evolving Communities of Recommenders: A Temporal Evaluation. Research Note RN/08/01, Department of Computer Science, University College London. Under Submission.
N. Lathia, S. Hailes, L. Capra. kNN User Filtering: A Temporal Implicit Social Network. Current Work.