The Solr wiki says "A repeated question is "how can I have the original term contribute more to the score than the stemmed version"? In Solr 4.3, the KeywordRepeatFilterFactory has been added to assist this functionality. "
https://wiki.apache.org/solr/AnalyzersTokenizersTokenFilters#Stemming (Full section reproduced below.) I can see how in the example from the wiki reproduced below that both the stemmed and original term get indexed, but I don't see how the original term gets more weight than the stemmed term. Wouldn't this require a filter that gives terms with the keyword attribute more weight? What am I missing? Tom --------------------------------------------- "A repeated question is "how can I have the original term contribute more to the score than the stemmed version"? In Solr 4.3, the KeywordRepeatFilterFactory has been added to assist this functionality. This filter emits two tokens for each input token, one of them is marked with the Keyword attribute. Stemmers that respect keyword attributes will pass through the token so marked without change. So the effect of this filter would be to index both the original word and the stemmed version. The 4 stemmers listed above all respect the keyword attribute. For terms that are not changed by stemming, this will result in duplicate, identical tokens in the document. This can be alleviated by adding the RemoveDuplicatesTokenFilterFactory. <fieldType name="text_keyword" class="solr.TextField" positionIncrementGap="100"> <analyzer> <tokenizer class="solr.WhitespaceTokenizerFactory"/> <filter class="solr.KeywordRepeatFilterFactory"/> <filter class="solr.PorterStemFilterFactory"/> <filter class="solr.RemoveDuplicatesTokenFilterFactory"/> </analyzer> </fieldType>"
