Re: Solr Support for BM25F

2016-04-18 Thread Doug Turnbull
It's worth adding that Lucene's BlendedTermQuery, (used in Elasticsearch's cross_field search), attempts to blend field's document frequency together. So I wonder what BlendedTermQuery plus BM25 similarity per-field would do? It might be close to true BM25F aside for the length issue. (You'd have

Re: Solr Support for BM25F

2016-04-18 Thread Tom Burton-West
Hi David, It may not matter for your use case but just in case you really are interested in the "real BM25F" there is a difference between configuring K1 and B for different fields in Solr and a "real" BM25F implementation. This has to do with Solr's model of fields being mini-documents (i.e. ea

RE: Solr Support for BM25F

2016-04-14 Thread Jay Parashar
@lucene.apache.org Subject: Solr Support for BM25F Hello, I am developing an enterprise search engine for a project and I was hoping to implement BM25F ranking algorithm to configure the tuning parameters on a per field basis. I understand BM25 similarity is now supported in Solr but I was hoping to be able to

Re: Solr Support for BM25F

2016-04-14 Thread Diego Ceccarelli (BLOOMBERG/ LONDON)
@lucene.apache.org At: Apr 14 2016 17:48:50 To: solr-user@lucene.apache.org Subject: Re: Solr Support for BM25F Hey David You can configure BM25 differently for each field by configuring the similarity per field type, as shown here in this example from the Solr tests https://github.com/sudarshang

Re: Solr Support for BM25F

2016-04-14 Thread Chris Hostetter
: a per field basis. I understand BM25 similarity is now supported in Solr BM25 has been supported for a while, the major change recently is that it is now the underlying default in Solr 6. : but I was hoping to be able to configure k1 and b for different fields such : as title, description, an

Re: Solr Support for BM25F

2016-04-14 Thread Doug Turnbull
Hey David You can configure BM25 differently for each field by configuring the similarity per field type, as shown here in this example from the Solr tests https://github.com/sudarshang/lucene-solr/blob/master/solr/core/src/test-files/solr/conf/schema-bm25.xml#L32 On Thu, Apr 14, 2016 at 12:41 P

Solr Support for BM25F

2016-04-14 Thread David Cawley
Hello, I am developing an enterprise search engine for a project and I was hoping to implement BM25F ranking algorithm to configure the tuning parameters on a per field basis. I understand BM25 similarity is now supported in Solr but I was hoping to be able to configure k1 and b for different field