Keyphrases
- natural language
- co occurrence
- word sense disambiguation
- natural language processing
- wordnet
- syntactic analysis
- highly ambiguous
- information retrieval
- ambiguous words
- discourse structure
- context sensitive
- text summarization
- semantic role labeling
- linguistic features
- dependency structure
- part of speech
- parse tree
- cross language information retrieval
- recognizing textual entailment
- machine translation
- information extraction