August 17, 2005
Question Answering Passage Retrieval Using Dependency Parsing
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Extracting Relation Paths
•Relation path
–Vector of relations between two nodes in the tree
produce    < P1: subj >    Wisconsin         
percent    < P2: prep  pcomp-n >   cheese         
Two constraints for relation paths:
1.Path length (less than 7 relations)
2.Ignore those between two words that
are within a chunk, e.g.  New York.
Explain chunk