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How to install the Windows version of TreeTagger

The Windows distribution of TreeTagger contains the following files:

• tree-tagger.exe: the tagger program
• train-tree-tagger.exe: the training program
• utf8-tokenize.perl: a Perl script which transforms the tagger input into one-word-perl-line format
• *-abbreviations: abbreviation lists required by the tokenizer
• tag-*.bat: batch files for different languages which call the tokeniser and the tagger
• chunk-*.bat: batch files for POS tagging and chunking

Perl Interpreter

First of all, you need to download and install a Perl interpreter (if you have not already installed one). You can download a Perl interpreter for Windows for free at: http://strawberryperl.com

TreeTagger downloads

1. Download these TreeTagger files from the official TreeTagger website:

Windows64 or Windows32 zip file according to your computer’s processor. The downloaded file will look something like this: tree-tagger-windows-3.2.2.zip

1. Extract the zip file, rename the resulting folder to TreeTagger and move this folder to the root directory of drive C:.
2. Download the tagging scripts: tagger-scripts.tar.gz
3. Download the script install-tagger.sh
4. Download the parameter files (trained models) for the languages you need. Unzip them (e.g. using Winzip or 7zip) and move the resulting .par file to the lib subfolder of the TreeTagger folder.

If the files have been unpacked into a single directory, you should restore the following directory structure:

TreeTagger:

INSTALL.txt
README.txt
bin 
cmd
lib

TreeTagger/bin:

tag-english.bat
tag-german.bat 
tag-spanish.bat        
tag-french.bat    
tag-italian.bat
train-tree-tagger.exe
tree-tagger.exe

TreeTagger/cmd:

mwl-lookup.perl
tokenize.pl

TreeTagger/lib:

english-abbreviations 
german-abbreviations   
spanish-abbreviations
french-abbreviations   
italian-abbreviations 
spanish-mwls  
*language*.par

Run TreeTagger

TreeTagger is not a programme you install but must be launched from the Command Line. So, open the Command Prompt (Click on the Windows Start button search for ‘Command Prompt’). You should see this:

1. Navigate to the C: drive with the cd command: cd c:
2. Next, type: PATH=C:\TreeTagger\bin;%PATH%
3. Next, navigate to the TreeTagger folder: cd TreeTagger. Your present working directory should now be: c:\TreeTagger
4. Now you can test the tagger on the INSTALL.txt file contained in the TreeTagger folder: tag-english INSTALL.txt
5. Press ENTER and you should now see the tagger in action. If you wish to save the results to a file, type tag-english INSTALL.txt > results.txt and the tagged texts will appear in your TreeTagger folder.

Troubleshooting

1. If you install the TreeTagger in a different directory (so not in the C: drive), you have to modify the first path in the batch files tag-*.bat using an editor such as Wordpad or Sublime Text Editor.

2. Should you get a “No such file or directory” error from TreeTagger, it’s possible that the .bat and .par files for the language you’re analysing aren’t linked to one another in your TreeTagger bin and lib folders. To link the two files, make sure that the PARFILE field in the bat file contains the correct language par file. The code below is the TreeTagger italian bat file, which should be linked to the italian.par file for TreeTagger to work (see the PARFILE=${LIB}/italian.par field).

#!/bin/sh

# Set these paths appropriately

BIN="/Users/greta/Desktop/treetagger/bin"
CMD="/Users/greta/Desktop/treetagger/cmd"
LIB="/Users/greta/Desktop/treetagger/lib"

OPTIONS="-token -lemma -sgml"

TOKENIZER=${CMD}/utf8-tokenize.perl
TAGGER=${BIN}/tree-tagger
ABBR_LIST=${LIB}/italian-abbreviations
PARFILE=${LIB}/italian.par

$TOKENIZER -i -a $ABBR_LIST $* |
$TAGGER $OPTIONS $PARFILE