Methods and Apparatus for User-Guided Inference of Regular Expressions for Information Extraction

摘要

Methods and apparatus are provided for inferring regular expressions that parse and extract information from line-oriented data. A regular expression is generated that matches a line of text by: evaluating a plurality of characters of the line of text to identify one or more domains associated with each of the plurality of characters; assigning a run-length to each of the identified domains; populating a data structure having a data position corresponding to each of the characters with the identified domains and corresponding run-lengths; and generating the regular expression based on the data structure.