Hi,
I am using the GermanStemFilter. It's stemming very good but only the suffixes.

An example: the word is "gelaufen". The GermanStemFilter stems it to "gelauf". And I would like to have such words to be stemmed to "lauf" so that the prefix "ge" and the suffix "en" are dismissed.

Are there any StemFilter which are stemming prefixes from words?

Hi,

I don't have any experience with the German stemmer above using the Snowball stemmer which is included in Lucene. You find more information about how it works here - http://snowball.tartarus.org/algorithms ... emmer.html . Especially nice is the list of words with their stemmed version.

That said, I am not so sure if you generally can just remove the 'ge'. What's for example about 'gewinnen'?

Try searching the Lucene/Solr forums for stemmer related questions. You might have more luck there. If you find something feel free to post it here.

--Hardy

Yes, I know this site. But you mentioned the very good "contra example" for stemming prefixes. If I'll find something in any other forum I'll post it here.