August 17, 2005
Generic Soft Pattern Models for Definitional QA
3/28
Two Methods of Pattern Matching
1.Hard Matching
–Rule induction
–Generalizing training instances into regular expression represented rules
–Performing slot by slot matching
2.Soft Matching
–Hidden Markov Models (HMM)
–Soft pattern matching for definitional QA (Cui et al., 2004)
Transitions about talking about the two methods in details in the next slides