Keyphrases
- question answering
- semantic relations
- natural language processing
- relation extraction
- wordnet
- semantic roles
- information extraction
- co occurrence
- question classification
- named entities
- information retrieval
- natural language questions
- question answering systems
- cross language
- natural language
- semantic relationships
- noun phrases
- knowledge sources
- text mining
- word sense disambiguation
- named entity recognition
- passage retrieval
- word pairs
- semantic similarity
- semantic role labeling
- knowledge representation
- web pages