Keyphrases
- topic modeling
- negative matrix factorization
- topic models
- probabilistic latent semantic analysis
- nonnegative matrix factorization
- latent dirichlet allocation
- collaborative filtering
- text mining
- matrix factorization
- text classification
- modeling framework
- scientific articles
- latent semantic analysis
- latent topics
- information retrieval
- topic extraction
- artificial intelligence
- data mining
- neural network
- text categorization
- visual features
- latent variables
- co occurrence
- probabilistic model
- prior knowledge
- databases