Provides an API to the Propbank, modified for the version included in Libin Shen's LTAG treebank in the file prop-all.idx. This is the java propbank programming API. It provides a clean and convenient interface for manipulating various aspects of propbank data in memory. It requires Java version 1.4.

The propbank consists of annotation and a lexicon. The lexicon, here sometimes referred to as "lexical guidelines" is stored in a series of xml files.

The annotation and lexicon are available through the LDC. The annotation is built on top of the Penn Treebank, and in most respects requires access to that data. Consequently, this package is built on top of a treebank API. (Note: For the present release, all dependencies to the treebank API have been removed. Lucas Champollion)

Two system properties should set to use this API "TREEBANKDIR", "FRAMEDIR", and "PROPBANKFILE". The defaults are set to "/usr/local/corpora/wsj", "/usr/local/lexica/frames", and "/usr/local/propbank/prop-all.id". These can be set with -DTREEBANKDIR=, -DFRAMEDIR= and -DPROPBANKFILE= on the command line. See also {@link edu.upenn.cis.propbank_shen.PBConfig}.