How to configure stemming in Solr?

Question

I add to solr index: \"American\". When I search by \"America\" there is no results.

How should schema.xml be configured to get results?

current configuratio

Answer 1

You have to use one stemmer for an analyzer and EnglishPorterFilterFactory is deprecated as @Marko already mentioned. So you should remove this one from analyzers.

I used SnowballPorterFilterFactory for both index and query analyzers -

The fieldType definition is pretty self explanatory, but just in case:

• Tokenizer solr.WhitespaceTokenizerFactory: This operation will break up the sentences into words, using whitespaces as delimiters.

• Filter solr.SnowballPorterFilterFactory: This filter will apply a stemming algorithm to each word (token). In the example above I have chosen the Snowball Porter stemming algorithm. Solr provides a few implementation of popular stemming algorithms.

You can browse several other stemming algorithms e.g. HunspellStemFilterFactory, KStemFilterFactory too.