Our Durm German Lemmatizer is open source and comes with GATE components for morphological analysis and lemmatization of German nouns:
The lexicon is auto-generated as described in our paper:
Praharshana Perera and René Witte,
A Self-Learning Context-Aware Lemmatizer for German.
Human Language Technology Conference/Conference on Empirical Methods
in Natural Language Processing (HLT/EMNLP 2005), pp. 636–643, October 6–8,
2005, Vancouver, B.C., Canada.
The distribution also includes our evaluation corpus with manual annotations for number, case, and lemma information (and we plan to update the distribution with a larger lexicon some time this summer).
On Wed April 25 2012, you wrote:
> Dear all,
> We are looking for open source morphological lexicons (or processors with
> high-accuracy morphology inside) for French, Italian, Spanish, German,
> which support the production of <word form, lemma> pairs (inflectional
> morphology only). All leads gratefully received. (We're aware of
> Thank you