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Sparsity Reduction Technique Using Grouping Method for Matrix Factorization in Differentially Private Recommendation Systems.

Taewhan KimKangsoo JungSeog Park
Published in: IEICE Trans. Inf. Syst. (2020)
Keyphrases
  • matrix factorization
  • collaborative filtering
  • recommendation systems
  • differentially private
  • recommender systems
  • keywords
  • high dimensional
  • probabilistic model
  • negative matrix factorization