Keyphrases
- nonnegative matrix factorization
- person re identification
- metric learning
- data representation
- negative matrix factorization
- matrix factorization
- video surveillance
- sparse coding
- least squares
- principal component analysis
- semi supervised
- spectral clustering
- camera network
- document clustering
- original data
- collaborative filtering
- multiscale
- computer vision
- data mining
- natural images
- relevance feedback
- recommender systems
- pairwise
- objective function