Open source Java implementation of the TextRank algorithm by Mihalcea,
et al. Note that this code only implements key phrase extraction based
on keyword co-occurance described in section 3 of the Mihalcea-Tarau
paper. This code does not yet implement the sentence extraction
described in section 4 of that paper.
See also:
 http://lit.csci.unt.edu/index.php/Graph-based_NLP
GitHub code repo:
 http://github.com/ceteri/textrank/
GoogleGroups discussion:
 http://groups.google.com/group/textrank-dev
Paco NATHAN
pacoid@cs.stanford.edu
@pacoid
http://www.google.com/profiles/ceteri
NB: There is a known issue with use of JWNL (Java libraries for
WordNet) such that if the graph size exceeds a particular threshold,
then low-level Java I/O reads to the WordNet database on disk will
cause Java thread to block -- even though JVM tools show no blocked
threads.
A potential remedy is to dump WordNet, or at least the parts of it
used here, into some DBD structure with an in-memory cache.
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simple test:
	ant run
test with a specific data file FOO.txt
	ant -Ddata.file=FOO.txt run
build the JAR for export to another project:
	ant jar
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Sources for third-party JAR files:
commons-logging-1.1.1.jar
 http://commons.apache.org/downloads/download_logging.cgi
commons-math-1.2.jar
 http://commons.apache.org/downloads/download_math.cgi
log4j-1.2.15.jar
 http://logging.apache.org/log4j/1.2/download.html
porterstemmer.jar
 http://snowball.tartarus.org/download.php
opennlp-tools-1.3.0.jar
 http://opennlp.sourceforge.net/
maxent-2.4.0.jar 
 https://sourceforge.net/projects/maxent/
sptoolkit.jar
 http://text0.mib.man.ac.uk:8080/scottpiao/sent_detector
trove-2.0.2.jar
 http://trove4j.sourceforge.net/
jwnl-1.4rc1.jar
 http://sourceforge.net/projects/jwordnet
jdom-1-1.jar
 http://jdom.org/downloads/index.html