Keyphrases
- formal languages
- formal language
- natural language
- controlled natural language
- formal language theory
- linguistic knowledge
- visual languages
- context free grammars
- operational semantics
- highly expressive
- stochastic context free grammars
- programming language
- word order
- mathematical theory
- precisely defined
- formal semantics
- formal representation
- attribute grammars
- semantic representation
- pattern languages
- language processing
- natural language processing
- formal descriptions
- context sensitive
- information retrieval
- wordnet
- representation language
- object oriented programming
- conceptual graphs
- context dependent