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- W4285777631 abstract "Knowledge distillation (KD) is a well-known method to reduce inference latency by compressing a cumbersome teacher model to a small student model. Despite the success of KD in the classification task, applying KD to recommender models is challenging due to the sparsity of positive feedback, the ambiguity of missing feedback, and the ranking problem associated with the top-N recommendation. To address the issues, we propose a new KD model for the collaborative filtering approach, namely collaborative distillation (CD). Specifically, (1) we reformulate a loss function to deal with the ambiguity of missing feedback. (2) We exploit probabilistic rank-aware sampling for the top-N recommendation. (3) To train the proposed model effectively, we develop two training strategies for the student model, called the teacher- and the student-guided training methods, selecting the most useful feedback from the teacher model. Via experimental results, we demonstrate that the proposed model outperforms the state-of-the-art method by 2.7-33.2% and 2.7-29.1% in hit rate (HR) and normalized discounted cumulative gain (NDCG), respectively. Moreover, the proposed model achieves the performance comparable to the teacher model." @default.
- W4285777631 created "2022-07-19" @default.
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- W4285777631 date "2019-11-12" @default.
- W4285777631 modified "2023-09-25" @default.
- W4285777631 title "Collaborative Distillation for Top-N Recommendation" @default.
- W4285777631 doi "https://doi.org/10.48550/arxiv.1911.05276" @default.
- W4285777631 hasPublicationYear "2019" @default.
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