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Information extraction research at the University of Massachusetts is based on portable, trainable language processing components. Some components are more effective than others, some have been under development longer than others, but in all cases, we are working to eliminate manual knowledge engineering. Although UMass has participated in previous MUC evaluations, all of our information extraction software has been redesigned and rewritten since MUC-5, so we are evaluating a completely new system this year.
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Fisher et al. (1995) studied this question.