Keyphrases
- grammatical inference
- context free grammars
- mildly context sensitive
- context free
- grammar induction
- context free languages
- finite state automata
- expressive power
- language independent
- closure properties
- regular languages
- natural language
- formal languages
- regular expressions
- genetic algorithm
- multi lingual
- relational databases
- database
- syntactic and semantic dependencies
- object oriented languages
- phrase structure
- databases
- information retrieval
- target language
- language processing
- text summarization
- inductive inference
- question answering