August 17, 2005
Question
Answering Passage Retrieval Using Dependency Parsing
17/28
Approach 2:
EM Based
•Employ
the training method from IBM Model 1
–Relation
mapping scores = word translation probability
–Utilize
GIZA to accomplish training
–Iteratively
boosting the precision of relation translation probability
•Initialization
– assign 1 to identical relations and a small constant otherwise