Keyphrases
- natural language
- legacy systems
- context free grammars
- wide coverage
- linguistic knowledge
- tree grammars
- formal languages
- natural language processing
- context free
- co occurrence
- written in natural language
- phrase structure
- natural language sentences
- data mining
- multiscale
- image sequences
- decision trees
- information systems
- genetic algorithm
- information retrieval
- machine learning