Weighted matrix factorization method proposed by Hu et al. and Pan et al.
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C#
public sealed class WRMF :  MF
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Y. Hu Y. Koren C. Volinsky: Collaborative filtering for implicit feedback datasets, IEEE International Conference on Data Mining (ICDM), 2008 R. Pan, Y. Zhou, B. Cao, N. N. Liu, R. M. Lukose, M. Scholz, Q. Yang: One-class collaborative filtering, IEEE International Conference on Data Mining (ICDM), 2008 We use the fast computation method proposed by Hu et al. and we allow a global weight to penalize observed/unobserved values. This engine does not support online updates.
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