A Joint Matrix Factorization Approach to Unsupervised Action Categorization.
Peng CuiFei WangLifeng SunShi-Qiang YangPublished in: ICDM (2008)
Keyphrases
- matrix factorization
- collaborative filtering
- recommender systems
- low rank
- missing data
- negative matrix factorization
- factor analysis
- text categorization
- factorization methods
- nonnegative matrix factorization
- unsupervised learning
- data matrix
- item recommendation
- variational bayesian
- implicit feedback
- stochastic gradient descent
- tensor factorization
- semi supervised
- supervised learning
- data sparsity
- personalized ranking
- data sets
- recommendation systems
- probabilistic matrix factorization