Conjugate German verbs into past participle

README.rst

Example for natural language processing with Python

About

Conjugate verbs. Here: past participle in German grammar.

The lexicon for verb conjugation provided by the fine "Pattern" package contains about 2,000 common German verbs. For unknown verbs it will fall back to a rule-based approach with an accuracy of about 87%.

Credits

This program uses the "Pattern" package for natural language processing which is implemented in the Python programming language and is being conceived by the CLiPS (Computational Linguistics & Psycholinguistics) research center at the University of Antwerp. Cheers!

Setup

pip install pattern

See also

Pattern (University of Antwerp)

• https://www.clips.uantwerpen.be/pages/pattern
• https://www.clips.uantwerpen.be/pages/pattern-de

GermaNet (University of Tübingen)

• GermaNet: http://www.sfs.uni-tuebingen.de/GermaNet/
• GermaNLTK: https://docs.google.com/document/d/1rdn0hOnJNcOBWEZgipdDfSyjJdnv_sinuAUSDSpiQns
• pygermanet: https://github.com/wroberts/pygermanet

Projekt deutscher Wortschatz (University of Leipzig)

• http://wortschatz.uni-leipzig.de/

SdeWaC corpus (University of Stuttgart)

• http://www.ims.uni-stuttgart.de/forschung/ressourcen/korpora/sdewac.en.html

Misc

• https://deutsch.lingolia.com/en/grammar/verbs/participles
• https://stackoverflow.com/questions/36398217/get-grammatical-conjugation-with-germanltk

conjugate-de-past-participle.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
from pattern.de import conjugate
from pattern.de import INFINITIVE, PRESENT, SG, SUBJUNCTIVE, PAST, PARTICIPLE


def infinitive_to_past_participle():
    pheader(u'Conjugating infinitive to past participle')
    words = ['sein', 'war', 'sehen', 'lesen', 'trinken', 'essen', 'rufen', 'anrufen', 'schwimmen']
    conjugate_words(words, PAST+PARTICIPLE)


def past_participle_to_infinitive():
    pheader(u'Conjugating past participle to infinitive')
    words = ['gewesen', 'gesehen', 'gelesen', 'getrunken', 'gegessen', 'gerufen', 'angerufen', 'angeruft', 'geschwommen']
    conjugate_words(words, INFINITIVE)


def past_participle_to_present():
    pheader(u'Conjugating past participle to present')
    words = ['gewesen', 'gesehen', 'gelesen', 'getrunken', 'gegessen', 'gerufen', 'angerufen', 'angeruft', 'geschwommen']
    conjugate_words(words, PRESENT)


def conjugate_words(words, tense):
    for word in words:
        print(u'{: <12} => {}'.format(word, conjugate(word, tense)))
    print()


def pheader(title):
    length = len(title)
    marker = u'-' * length
    print(marker)
    print(title)
    print(marker)


if __name__ == '__main__':
    infinitive_to_past_participle()
    past_participle_to_infinitive()
    past_participle_to_present()

output.md

Run program:

$ ./conjugate-de-past-participle.py                                                                                                                      

Enjoy its output:

-----------------------------------------
Conjugating infinitive to past participle
-----------------------------------------
sein         => gewesen
war          => gewesen
sehen        => gesehen
lesen        => gelesen
trinken      => getrunken
essen        => gegessen
rufen        => gerufen
anrufen      => angeruft
schwimmen    => geschwommen

-----------------------------------------
Conjugating past participle to infinitive
-----------------------------------------
gewesen      => sein
gesehen      => sehen
gelesen      => lesen
getrunken    => trinken
gegessen     => essen
gerufen      => rufen
angerufen    => anrufen
angeruft     => angerufen
geschwommen  => schwimmen

--------------------------------------
Conjugating past participle to present
--------------------------------------
gewesen      => ist
gesehen      => sieht
gelesen      => liest
getrunken    => trinkt
gegessen     => isst
gerufen      => ruft
angerufen    => ruft an
angeruft     => geruft an
geschwommen  => schwimmt