Keyphrases
- vector space model
- information retrieval
- vector space
- semantic similarity
- retrieval model
- index terms
- document representation
- web documents
- unsupervised learning
- language model
- semantic information
- supervised learning
- document clustering
- tf idf
- semi supervised
- latent semantic indexing
- data mining
- document categorization
- text mining
- similarity measure
- text categorization
- information retrieval systems
- co occurrence
- mobile devices
- knowledge base