August 17, 2005
Question
Answering Passage Retrieval Using Dependency Parsing
24/28
Error Analysis
•Mismatch of question
terms
•e.g. In
which city is the River Seine
•Introduce question
analysis
•Paraphrasing between the
question and the answer sentence
•e.g. write the book
→ be the author of the book
•Most of current
techniques fail to handle it
•Finding paraphrasing
via dependency parsing (Lin and Pantel)