Keyphrases
- syntactic structures
- natural language
- word order
- linguistic analysis
- natural language generation
- context free grammars
- parse tree
- information retrieval
- phrase structure
- controlled natural language
- natural language sentences
- semantic parsing
- syntactic analysis
- text retrieval
- syntactic categories
- natural language processing
- detection algorithm
- complex background
- keywords
- text mining
- detection method
- automatic detection
- free text
- text documents
- web documents
- semantic representation
- natural language text
- database
- spoken language
- context free
- semantic network
- textual data
- stochastic context free grammars
- noun phrases