mirror of https://github.com/explosion/spaCy.git
41 lines
1.3 KiB
Python
41 lines
1.3 KiB
Python
# coding: utf8
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from __future__ import unicode_literals
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from ...lemmatizer import Lemmatizer
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class GreekLemmatizer(Lemmatizer):
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"""
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Greek language lemmatizer applies the default rule based lemmatization
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procedure with some modifications for better Greek language support.
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The first modification is that it checks if the word for lemmatization is
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already a lemma and if yes, it just returns it.
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The second modification is about removing the base forms function which is
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not applicable for Greek language.
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"""
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def lemmatize(self, string, index, exceptions, rules):
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string = string.lower()
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forms = []
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if string in index:
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forms.append(string)
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return forms
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forms.extend(exceptions.get(string, []))
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oov_forms = []
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if not forms:
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for old, new in rules:
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if string.endswith(old):
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form = string[: len(string) - len(old)] + new
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if not form:
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pass
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elif form in index or not form.isalpha():
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forms.append(form)
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else:
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oov_forms.append(form)
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if not forms:
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forms.extend(oov_forms)
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if not forms:
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forms.append(string)
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return list(set(forms))
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