A Definition Extraction Algorithm Combining Hard Pattern Matching and Soft Pattern Matching
Chunfeng Yuan · Computer Technology and Development · 2012
Definition extraction is an important topic in the field of information extraction.It proposes a definition extraction method based on both hard pattern matching and soft pattern matching.Firstly,conduct hard matching on candidate sentences and hard patterns.Secondly,n-gram based soft pattern matching model is used to get a matching score between the candidate sentence and the soft pattern.In the second step,an upper threshold is set to recall candidate sentences with a high matching score;A lower threshold is used to rule out some wrongly-recalled sentences by hard matching.The experimental results show that the proposed definition extraction method is far superior to both pure hard pattern matching and soft pattern matching method.