creates a hierarchical structure of phrases - using Context-Free Grammars designed by linguists.
- The terminal symbols become the parts of speech tags
- phrases become the non-terminal symbols
- types of phrases
- NP: noun phrase
- VP: verb phrase
- PP: prepositional phrase
- AdjP: adjectival phrase
- AdvP: adverbial phrase
- start symbol - S (sentence)
- some preset production rules
- example production rules
- example production rules
Bottom - up analysis
- label POS tags
- project the phrases (NP, VP, AdjP, AdvP, PP) for each noun/pronoun, verb, adjective, adverb and preposition.
- connect the phrases until root S is reached
e.g. 1
e.g. 2
