Hi Neil, I think payloads is the way to go. Index-time boosting is not per term.
Otis ---- Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch Lucene ecosystem search :: http://search-lucene.com/ ----- Original Message ---- > From: Neil Hooey <nho...@gmail.com> > To: solr-user@lucene.apache.org > Sent: Wed, May 4, 2011 9:36:24 PM > Subject: Do boosts on values in multivalued fields still get consolidated? > > Kapil Chhabra indicates on his blog that if you boost a value in a > multivalued field during index time, the boosts are consolidated for > every field, and the individual values are lost. > > Here's the link: > http://blog.kapilchhabra.com/2008/01/solr-index-time-boost-facts-2 > > This post is from 2008-01-20, but it still seems to be true in Solr 3.1. > > Has this behaviour been fixed in future versions of Solr, or are there > plans to fix it? > > In general, when a user searches for a document, I'd like to > arbitrarily weight each keyword for that document during index time. > > For example if they searched for "q=keywords:monkey", and got these documents: > keywords: [ monkey, ape, chimp, garage ] > keywords: [ monkey, cloud, food, door ] > > I'd like to have boosts recorded like this, at index time, based on > keyword co-relevance: > keywords: [ monkey:50, ape:50, chimp:50, garage:0.1 ] > keywords: [ monkey:1, cloud:1, food:1, door:1 ] > > Since, in the first document, the word "monkey" is clearly related to > "ape" and "chimp", but "garage" is not. Similarly in the second > document, none of the keywords are really related to each other at > all. > > I see a couple of potential solutions to this problem, in the absence > of boosts for multivalued fields: > 1. Turn keyword lists into strings, and use payloads: "monkey|50, > ape|50, chimp|50, garage|0.1" > 2. Use dynamic fields of the form: keyword_*: keyword_monkey, > keyword_ape, ... and boost those fields. > > Are those solutions feasible, or are there better solutions to this problem? > > - Neil >
