CSCI 587 - Lecture 21 Compositional Semantics: VPs and PPs
- Representing VPs
- John "ran".
- John "kissed Mary".
- John "read the book".
- John "gave the book to Mary".
- Representing VPs as predicates
- Complex VPs: VP -> VP CONJ VP
John kissed Mary and read the book.
- Prepositional Phrases (PP)
- modifiers in NPs "the man in the green hat"
- in the store
"The man is in the store" vs "the man in the store"
( IN-LOC1 < THE m1 MAN1> < THE s1 STORE>)
< THE m1 (MAN1 m1)(IN-LOC1 m1 < THE s1 STORE1>)>
- Prepositional Phrases (PP) as Predicates also
- NPs as terms (objects) in the logical representation
- Sentences as propositions
- Using these conventions for representing constituents we can compose them
- Augmenting the grammar with the SEM feature
- Adding to the lexicon (figure 9.2)
- Adding to the grammar rules (Grammar 9.3)
- (S SEM (?semvp ?semnp)) -> (NP SEM ?semnp)(VP SEM ?semvp)
- Parsing
- VAR feature - stores the discourse variable that corresponds
to the constituent
- Morphological rules must be adapted also
- Review for Test2
- NLP in Prolog
- Parse Trees in Prolog
- Bottom-Up Chart Parsing
- Features
- Parsing with Features
- Parsing Auxiliaries
- Parsing wh-Questions
- Semantics
- Semantics: Thematic Roles
- Compositional Semantics
- Readings
- Sections 9.1-9.2
- Reminder
- Test 2 April 10
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URL = http://sourgum.cs.sc.edu/~matthews/Courses/587/Lectures/lecture21.html