Keyphrases
- nonnegative matrix factorization
- probabilistic latent semantic indexing
- negative matrix factorization
- matrix factorization
- active set
- data representation
- nonnegative matrix
- spectral clustering
- original data
- machine learning
- least squares
- pattern recognition
- relevance feedback
- image data
- high dimensional
- natural language
- computer vision
- factor matrices
- search engine
- information retrieval