Tregex and Tsurgeon 2.0.2

Tregex is a utility for matching patterns in trees, based on tree relationships and regular expression matches on nodes (the name is short for "tree regular expressions"). It contains essentially the same functionality as TGrep2 (which had a superset of the functionality of the original tgrep), plus several extremely useful relations for natural language trees, for example "A is the lexical head of B", and "A and B share a (hand-specified) variable substring" (useful for finding nodes coindexed with each other). Because it does not create preprocessed indexed corpus files, it is however somewhat slower than TGrep2 when searching over large treebanks. As a Java application, it is platform independent, and can be used programmatically in Java software. There is also both a graphical interface (also platform independent) and a command line interface through the TregexPattern main method. To launch the graphical interface double click the stanford-tregex.jar file.<br /><br />From version 1.2 on, Tregex bundles the Tsurgeon tree transformation language. Tsurgeon can be run from the command line and is also incorporated into the TregexGUI graphical interface.<br /><br />Also included from version 2.0 on is a similar package which operates on SemanticGraphs, semgrex. An included set of powerpoint slides and the javadoc for SemgrexPattern provide an overview of this package.<br /><br />Tregex was written by Galen Andrew and Roger Levy, Tsurgeon was written by Roger Levy, and the graphical interface for both was written by Anna Rafferty. Semgrex was written by Chloe Kiddon and John Bauer. These programs also rely on classes developed by others as part of the Stanford JavaNLP project.

Requirements:	No special requirements
Platforms:	Mac, Mac OSX
Keyword:	Bundles,  Incorporated,  Operates,  Package,  Similar,  Stanfordtregexjar,  Transformation,  Tregexgui,  Tsurgeon,  Version
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