Keyphrases
- formal language
- natural language
- formal languages
- linguistic knowledge
- temporally extended goals
- formal language theory
- conceptual graphs
- action language
- logical language
- representation language
- temporal logic
- language learning
- heuristic search
- programming language
- word order
- operational semantics
- concurrent actions
- language generation
- highly expressive
- context free
- knowledge representation
- stochastic context free grammars
- grammar rules
- tree adjoining grammar
- formal theory
- formal semantics
- wide coverage
- planning problems