Regular Expression and Application in Information Extraction
Zhang Yan · Computer Knowledge and Technology · 2009
Regular expression is the rules of describing strings with common property. It provides a method how to search especial strings from the set of strings. The main function of information extraction is to extract factual information from text document. This paper introduced the theory of regular expression,and take the web document and law document for example,demonstrated how to use regular ex-pression to extract factual information from text document.