Keyphrases
- natural language
- parse tree
- context free grammars
- theoretical basis
- syntactic and semantic dependencies
- neural network
- syntactic categories
- dependency parser
- general theory
- natural language processing
- belief functions
- theoretical framework
- computational model
- hidden markov models
- information systems
- syntactic structures
- semantic parsing
- syntactic parsing
- maximum entropy model
- genetic algorithm
- highly ambiguous
- information retrieval