Keyphrases
- document clustering
- prior knowledge
- clustering method
- text documents
- document representation
- document collections
- document clusters
- text mining
- topic extraction
- clustering algorithm
- negative matrix factorization
- vector space model
- topic detection
- k means
- domain knowledge
- tolerance rough set
- cluster analysis
- machine learning
- generative model
- information extraction
- knn
- natural language
- clustering approaches
- training data
- search engine
- data mining