Data imputation using a trust network for recommendation via matrix factorization.
Won-Seok HwangShaoyu LiSang-Wook KimKichun LeePublished in: Comput. Sci. Inf. Syst. (2018)
Keyphrases
- matrix factorization
- collaborative filtering
- recommender systems
- item recommendation
- data sparsity
- cold start problem
- rating prediction
- data imputation
- missing data
- latent factor models
- factorization methods
- negative matrix factorization
- nonnegative matrix factorization
- link prediction
- network structure
- missing values
- factor analysis
- recommendation systems
- personalized recommendation
- user preferences
- least squares
- tensor factorization
- implicit feedback
- stochastic gradient descent
- low rank
- probabilistic matrix factorization
- user ratings
- user interests
- semi supervised