On Thu, Nov 7, 2013, at 10:51 PM, Michael Tracey wrote: > I'm trying to boost results slightly on a price (not currency) field that > are closer to a certain value. I want results that are not too expensive > or too inexpensive to be favored. Here is what we currently are trying: > > bf=sub(1,abs(sub(15,price)))^0.2 > > where 15 is that "median" I want to boost towards. Is this a good way? > I understand in older solr's it was common to use recip(ord()) for this > but you shouldn't do so now. > > Thanks for any comments or advice on improving this.
I think this is a case of "if it works". If it works for you, then great. What I would say though, is that if you have a lot of documents in your index, consider pre-computing that field at index time, and boost on the pre-computed value, as that will give you better performance. Upayavira
