Keyphrases
- coreference resolution
- cross document
- noun phrases
- relation extraction
- natural language processing
- information retrieval
- document collections
- named entities
- document clustering
- keywords
- document retrieval
- tf idf
- text documents
- multi document summarization
- hidden variables
- retrieval systems
- web documents
- term frequency
- information retrieval systems
- domain specific
- bayesian networks