The Term Generating Power of Context-Free Hypergraph Grammars.
Joost EngelfrietLinda HeykerPublished in: Graph-Grammars and Their Application to Computer Science (1990)
Keyphrases
- context free
- tree languages
- context sensitive
- context dependent
- grammatical inference
- context free grammars
- context free languages
- inductive inference
- phrase structure
- grammar rules
- finite state
- graph grammars
- parse tree
- information retrieval
- phrase extraction
- closure properties
- regular languages
- information retrieval systems
- natural language