The Stanford Natural Language Processing Group

TokensRegex is a generic framework included in Stanford CoreNLP for defining patterns over text (sequences of tokens) and mapping it to semantic objects represented as Java objects. TokensRegex emphasizes describing text as a sequence of tokens (words, punctuation marks, etc.), which may have additional attributes, and writing patterns over those tokens, rather than working at the character level, as with standard regular expression packages. TokensRegex was used to develop SUTime, a rule-based temporal tagger for recognizing and normalizing temporal expressions. An included set of slides provides an overview of this package. There is quite detailed Javadoc for several of the key classes: for the matching patterns, see the Javadoc for TokenSequencePattern and for actions, see the Javadoc for Expressions.