Keyphrases
- document clustering
- clustering algorithm
- clustering method
- document collections
- text mining
- negative matrix factorization
- document clusters
- text documents
- vector space model
- topic extraction
- document representation
- k means
- databases
- pairwise constraints
- real world
- spanning tree
- similarity measure
- feature selection
- social networks
- artificial intelligence
- ant based clustering
- tolerance rough set