install pacaya nlp with jython

# Install Pacaya NLP with Jython

## Install Jython

• Download [Jython](http://www.jython.org/downloads.html)

• Follow the [instructions](https://wiki.python.org/jython/InstallationInstructions).

• e.g.

   `> wget http://search.maven.org/remotecontent?filepath=org/python/jython-installer/2.7.0/jython-installer-2.7.0.jar` 
   
   `> mv remotecontent\?filepath\=org%2Fpython%2Fjython-installer%2F2.7.0%2Fjython-installer-2.7.0.jar jython_installer-2.7.0.jar`
   
   `> mkdir ~/local/jython`
   
   `> java -jar jython_installer-2.7.0.jar`

• N.B. You might want to change some bin names for Jython

   `> cd ~/local/jython/bin/`
   
   `> mv pip jypip`
   
   `> mv pip2 jypip2`
   
   `> mv pip2.7 jypip2.7`
   
   `> mv easy_install jy_easy_install`
   
   `> mv easy_install-2.7 jy_easy_install-2.7`
   

## Install Pacaya NLP

• It's easy.

   `> git clone https://github.com/mgormley/pacaya-nlp.git`
   
   `> cd pacaya-nlp/`
 
   `> mvn compile assembly:single`
   
   

## Add env vars

• e.g. (.bashrc)

   `export CLASSPATH= 'mvn exec:exec -q -Dexec.executable="echo" -Dexec.args="%classpath"' (see setupenv.sh)`
   
   `export JYTHONPATH=[$[[HOME]](etc.)]/pacaya-nlp/target/pacaya-nlp-3.1.4-SNAPSHOT-jar-with-dependencies.jar`
   

## Check if it works

• e.g.

   `> jython`
   
   `> from edu.jhu.pacaya.gm.train import CrfTrainer`