Hi, I have put together a very simple English lemmatizer using JWNL as part of a POS module based on opennlp API. The lemmatizer uses the constructor of JWNLDictionary in opennlp coref package.
If there is interest in explicitly providing an English lemmatizer in the project I would not mind providing the code. You can try the thing in: https://bitbucket.org/ragerri/ixa-pipe-pos Cheers, Rodrigo
