G22.2590 - Natural Language Processing - Spring 2005 Prof. Grishman

Lecture 11 Outline

April 18, 2003

Syntax-Driven Semantic Analysis  (J&M Chapter 15))

Goal:  general rules for producing semantic representations of sentences (as discussed last week).

Approach:  syntax-driven semantic analysis

What should the semantic representation of intermediate nodes look like?

A simple grammar with semantics (Word file).

Some examples using this grammar ...

Scoping resolution:  converting quasi-logical form to logical form (with conventional quantifier scope)

Factors in resolving scope:

Strategies for data base query applications

Assuming queries are full grammatical sentences: (we will consider how to handle fragmentary queries as part of discourse processing)