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https://github.com/juditacs/wikt2dict

Wiktionary parser tool for many language editions.
https://github.com/juditacs/wikt2dict

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Wiktionary parser tool for many language editions.

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# wikt2dict



Wiktionary translation parser tool for many language editions.



Wikt2dict parses only the translation sections.

It also has a triangulation mode which combines the extracted translation pairs to

generate new ones. 



## News



Wikt2dict changed completely, hope for the better. If you would like to keep using the old one:

https://github.com/juditacs/wikt2dict/tree/a08cc896c22dc78db62e1b790c3ec157d00ad08f



* Changed interface. See below for details (April 2014)

* Added support for German Wiktionary (Aug 2013)

* Had a poster at the Building and Using Comparable Corpora Workshop (BUCC) at ACL13, updated Bibtex accordingly

  * The paper is available here: http://www.aclweb.org/anthology/W/W13/W13-2507.pdf

* All dictionaries are available here: http://nessie.nytud.hu/dict



## Requirements



Wikt2dict should run on any mainstream Linux distribution. It needs Python2.7 and basic command line

tools that should be found on most Linux distributions (wget, bzcat).

If you're working with large Wiktionaries such as the English Wiktionary, you need at least 10GB of

free space, preferrably more.

For all Wiktionary editions supported, you need about 35GB of free space.



## Installation



    git clone https://github.com/juditacs/wikt2dict.git

    cd wikt2dict

    sudo pip install -e .



You can install wikt2dict in virtualenv if you do not have root access.



A very quick guide to virtualenv:



    virtualenv w2d_env

    source w2d_env/bin/activate

    git clone https://github.com/juditacs/wikt2dict.git

    cd wikt2dict

    pip install -e .



Note that this way wikt2dict can only be used once the virtualenv was activated.

You need to run source w2d\_env/bin/activate every time you login.



## Very quick start



Wikt2dict's basic functionalities can be accessed using the w2d.py script (which should be directly callable after running pip install).



    $ w2d.py -h

    Wikt2Dict

    

    Usage:

      w2d.py (download|extract|triangulate|all) (--wikicodes=file|...)

    

    Options:

      -h --help              Show this screen.

      --version              Show version.

      -w, --wikicodes=file   File containing a list of wikicodes.



W2d.py currently supports 3+1 actions. All actions need a list of Wiktionary codes to work with.

You can either list the codes manually or provide them in a file (--wikicodes option).



The actions are:



1. download: download the Wiktionary dumps. Convert them from XML to plaintext with a special page separator.

The files are saved in the directory specified in config.py:wiktionary\_defaults['dump\_path\_base'].

The default is wikt2dict/dat/wiktionary/

1. extract: extract translations.

The translations are saved to the file specified in config.py:wiktionary\_defaults['output\_path'].

By default this file is wikt2dict/dat/wiktionary//translation\_pairs.

1. triangulate: use triangulation to generate more translations.

Triangles are saved to the directory config.py:wiktionary\_defaults['triangle\_dir'] in separate files

named as \_\_. This file would contain pairs in wc1-wc3 languages triangulated via wc2.

For more information on triangulating, see: http://aclweb.org/anthology/W/W13/W13-2507.pdf

Note that triangulating only makes sense if you specify at least 3 languages.

1. all: do all of the above.



Let's try it out on a few small Wiktionary editions.



Downloading the Slovak, the Slovenian and the Occitan Wiktionaries:



    w2d.py download sk sl li



The downloaded and textified Wiktionaries should appear in dat/wiktionary//wiktionary.txt



Extracting translations:



    w2d.py extract sk sl li



The extracted translations should appear in dat/wiktionary//translation\_pairs.



Now let's try triangulating to get a bunch of new translations:



    w2d.py triangulate sk sl li



The results should appear in dat/triangle/ arranged in subdirectories with a maximum of 1000 files per directory

to avoid filesystem problems.

Using only 3 such small editions for triangulating does not make much sense (it yielded 4 pairs on the April 2014 dumps).



Or do all of it at once:



    w2d.py all sk sl li



## Output



The output is a tab-separated file. 

If you only want the translation pairs you should just cut the first 4 columns:

    

    cut -f1-4  > 



Or without Wiktionary codes:



    cut -f2,4  > 



Where  should be replaced by the output of either the Wiktionary extraction

or the triangulating, and  is the file where the filtered columns are saved.



The columns explained in details are below.



The one extracted from the Wiktionaries has the following columns:



1. Wiktionary code 1 (language 1)

2. Word or expression in language 1

3. Wiktionary code 2 (language 2)

4. Word or expression in language 2

5. Wiktionary code of the Wiktionary from which the pair was extracted

6. Article from which the pair was extracted

7. Type of parser used (you probably don't need this)



An example:



    en      dog     fr      chien   en      dog     defaultparser



The triangulating output has the following columns:



1. Wiktionary code 1 (language 1)

2. Word or expression in language 1

3. Wiktionary code 2 (language 2)

4. Word or expression in language 2

5. 5-10. The articles and their source Wiktionary that were used to generate this pair



    hu      kutya   oc      chin    hu      kutya   el      σκύλος  oc      chin



The pairs are listed with all possible ways they were found. I provided a little script to 

sort, unify and count the number of times one pair appears.

Usage (from wikt2dict base directory):



    cat  | bash bin/merge_triangle.sh > output_file



To use with all triangle files:



    cat /*/* | bash bin/merge_triangle.sh > output_file



where the  should be replaced with the directory where the individual triangle files are

stored (triangle\_dir option).



Congratulations, you have successfully finished the test tutorial of wikt2dict.

Please send your feedback to [email protected].



## Cite



Please cite:



    @InProceedings{acs-pajkossy-kornai:2013:BUCC,  

      author    = {Acs, Judit  and  Pajkossy, Katalin  and  Kornai, Andras},  

      title     = {Building basic vocabulary across 40 languages},  

      booktitle = {Proceedings of the Sixth Workshop on Building and Using Comparable Corpora},  

      month     = {August},  

      year      = {2013},  

      address   = {Sofia, Bulgaria},  

      publisher = {Association for Computational Linguistics},  

      pages     = {52--58},  

      url       = {http://www.aclweb.org/anthology/W13-2507}  

    }  



Or this one:



    @InProceedings{CS14.864,

    author = {Judit Ács},

    title = {Pivot-based multilingual dictionary building using Wiktionary},

    booktitle = {Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC'14)},

    year = {2014},

    month = {may},

    date = {26-31},

    address = {Reykjavik, Iceland},

    editor = {Nicoletta Calzolari (Conference Chair) and Khalid Choukri and Thierry Declerck and Hrafn Loftsson and Bente Maegaard and Joseph Mariani and Asuncion Moreno and Jan Odijk and Stelios Piperidis},

    publisher = {European Language Resources Association (ELRA)},

    isbn = {978-2-9517408-8-4},

    language = {english}

    }



    

## Known Bugs



* FIXED - Lithuanian and a few other Wiktionaries have translation tables in many articles

not only for Lithuanian words and these are parsed as they were Lithuanian words. 

Language detection for all articles should be added. This issue is fixed but configuration

should be updated.



* Logging is not always accurate



## Upcoming



* 4lang coverage, finding translations for a list of words



  * Check out our basic vocabulary at: http://hlt.sztaki.hu/resources/4lang/