Pre-processing approaches for collaborative filtering based on hierarchical clustering
Information Sciences(2020)
摘要
•Automatic extraction of users’ groups based on hierarchical clustering.•Can be applied prior to any recommender algorithm.•Targets sparsity and high dimensionality in recommender systems.•Ensures a minimum number of users in each cluster for better accuracy.•Techniques don’t require critical parameters.
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关键词
Pre-processing,Recommender systems,Hierarchical clustering,Cluster quality,Optimal selection of clusters,Sparsity reduction
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