On Apr 5, 2011, at 3:17 PM, Chris Hostetter wrote: > one of the original use cases for bq was for artificial keyword boosting, > in which case it still comes in handy... > > bq=meta:promote^100 text:new^10 category:featured^100 (*:* > -category:accessories)^10
Yeah I thought of this specific use-case. There are two issues with it though: 1. Each piece is still subject to the IDF component of the score, requiring me to make each individual category have a boost factoring that in. For example, if I want meta:promote to be twice as boosted as category:featured, I can't simply boost the first to 2 and the second to 1 (the default) -- I have enable debugQuery and carefully skew them appropriately to what I want. And the IDF might change as the data changes. 2. It still ads instead of multiplies which is always what I want. (should I not always want it?) It's hard to actually avoid the IDF irrespective of which parameter you use. The only way I know to give a fielded query a constant score is a range query which is a total hack, e.g. meta:[promote TO promote] which you could then boost. Ick! ~ David Smiley Author: http://www.packtpub.com/solr-1-4-enterprise-search-server/
