It seems there is a SimilarLikeThis in lucene . I don't know whether a counterpart in solr. It just use the found document as a query to find similar documents. Or you just use boolean or query and similar questions with getting higher score. Of course, you can analyse the question using some NLP techs such as identifying entities and ingore less usefull words such as "which" "is" ... but I guess tf*idf score function will also work well
2010/9/22 Igor Chudov <ichu...@gmail.com>: > Hi guys. I am new here. So if I am unwittingly violating any rules, > let me know. > > I am working with Solr because I own algebra.com, where I have a > database of 250,000 or so answered math questions. I want to use Solr > to provide approximate matching functionality called "similar items". > So that users looking at a problem could see how similar ones were > answered. > > And my question is, does Solr support some "find similar" > functionality. For example, in my mind, sentence "I like tasty > strawberries" is 'similar' to a sentence such as "I like yummy > strawberries", just because both have a few of the same words. > > So, to end my long winded query, how would I implement a "find top ten > similar items to this one" functionality? > > Thanks! >
