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README

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.

---------

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

---------

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

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Java implementation of the TextRank algorithm by Mihalcea, et al. http://lit.csci.unt.edu/index.php/Graph-based_NLP

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