clips / clips/pattern

German parsetree lemmatising wrong?

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Description

Hi,
We are using Pattern 2.6 and we ran some quick tests regarding German lemmatising. Our goal is to get all lemmas of a German string.
The following code snippet lemmatises a German string and reproduces a particular example issue:
from pattern.de import parsetree
s=parsetree('Der betrogenen Briten', lemmata = True)
print s
yields the following output
[Sentence('Der/DT/B-NP/O/der betrogenen/NN/I-NP/O/betrogenen Briten/NN/I-NP/O/briten')]
However, betrogenen should be lemmatised into betrogen and Briten into brite instead. Are we overlooking something? Should we send our issue to someone in particular?
Thank you very much!
Best, Josef

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Research direction

Start with the supplied Python reproduction using pattern.de.parsetree and lemmata=True, then trace the German lemmatisation path responsible for the output. Confirm the expected lemmas for “betrogenen” and “Briten” and add or update coverage so the example produces “betrogen” and “brite”.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
machine-learning
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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