Need explanation on Language Stemmer of Solr

问题

I'm using nutch with Solr for a developing a search engine for Arabic texts. I need to implement a stemmer on my Arabic texts, and while serching on Solr Stemmer I found that it provide those two filters

<filter class="solr.ArabicNormalizationFilterFactory"/>

<filter class="solr.ArabicStemFilterFactory"/>

I tried them but did not understand what they do .. So please any one can help me with some examples??

and do these two do this:

العملات Stemmed to عملة

البسَاتِين ، بساتينكم Stemmed to بستان

thank you.

回答1:

You can find some details here: http://lucene.apache.org/core/3_6_0/api/contrib-analyzers/org/apache/lucene/analysis/ar/ArabicStemmer.html

That says:

Stemming is defined as:

• Removal of attached definite article, conjunction, and prepositions.
• Stemming of common suffixes.

来源：https://stackoverflow.com/questions/10681281/need-explanation-on-language-stemmer-of-solr