Keyphrases
- automatic extraction
- semantic relations
- knowledge sources
- medical knowledge
- semantic relationships
- medical domain
- relation extraction
- medical diagnosis
- medical education
- wordnet
- measuring semantic similarity
- ontology learning
- semantic network
- co occurrence
- natural language processing
- knowledge based systems
- data analysis
- named entities
- domain specific
- biomedical literature
- domain knowledge
- semantic structure
- text mining
- natural language text
- knowledge base
- web pages
- expert systems
- search engine
- lexical chains
- dependency relations