Why you want the personalization to happen into Similarity? Similarity will score all the docs matching your query, so it has too be really fast. Unless your personalization is very easy (e.g., tf/idf computed in a different way based on the user) I would not put it there..
Did you consider writing your own RankQuery, or reusing the learning to rank module? https://lucene.apache.org/solr/guide/7_2/query-re-ranking.html Cheers, Diego From: solr-user@lucene.apache.org At: 01/05/18 11:54:08To: solr-user@lucene.apache.org Subject: Personalized search parameters Hi, first of all I want to say that i'm a beginner with the whole Lucene/Solr environment. I'm trying to create a simple personalized search engine, and to do so i was thinking about adding a parameter user=xxxx to the uri of the query requests, that i would need during the scoring phase to rerank the result on based on the user profile (stored as a normal document). My question is: how can i create a custom Similarity class that is able to retrieve a parameter passed during the request phase? I "know" from this https://medium.com/@wkaichan/custom-query-parser-in-apache-solr-4634504bc5da <https://medium.com/@wkaichan/custom-query-parser-in-apache-solr-4634504bc5da> that extending QParsePlugin I can access the request parameters, but how can i pass them during the whole chain of search operations so that they are accessible during the scoring phase? Thank you for your help. -- Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html
