Hi Grant, Thanks for your feedback. The major short-term downside to switching to dismax with multiple fields would be the required re-writing of our current PHP code - especially our code to handle addition of facets fields to the q parameter. From reading about dismax, seems we would need to instead use fq to limit the search results to those matching a specific facet value.
Best, Peter On Sun, Nov 30, 2008 at 8:43 AM, Grant Ingersoll <[EMAIL PROTECTED]> wrote: > Hi Peter, > > What are the downsides to your last alternative approach below? That seems > like the simplest approach and should work as long as the terms within those > fields do not need to be boosted separately. > > If you want to go the boosting terms route, this is handled via a thing > called Payloads in Lucene. Payloads are an array of bytes that are added > during indexing at the term level through the analysis process. To do this > in Solr, you would need to write your own TokenFilter that adds payloads as > needed. Then, during search, you can take advantage of these payloads by > using the BoostingTermQuery from Lucene. The downside to all of this is > Solr doesn't currently support it, so you would be coding it up yourself. > I'm sure, though, that if you were to start a patch on it, there would be > others who are interested. > > Note, on the payloads. The biggest sticking point, I think, is coming up w/ > an efficient way of encoding the byte array and putting it into the XML > format, such that one can send in payloads when indexing. It's not > particularly hard, but no one has done it yet. > > -Grant > > > On Nov 29, 2008, at 10:45 PM, Peter Wolanin wrote: > >> I've recently started working on the Drupal integration module for >> SOLR, and we are looking for suggestions for how to address this >> question: how do we boost the importance of a subset of terms within >> a field. >> >> For example, we are using the standard request handler for queries, >> and the default field for keyword searches is a concatentation of the >> title, body, taxonomy terms, etc. >> >> One "hackish" way I can imagine is that terms we want to boost (for >> example the title, or text inside h2 tags) could be concatenated on >> multiple times. Would this be effective and reasonable? >> >> It seems like the alternative is to try to switch to using the dismax >> handler, storing the terms that we desire to have different boosts >> into different fields, all of which are in the list of query fields? >> >> Thanks in advance for your suggestions. >> >> -Peter >> >> -------------------------------------------------------------- >> Peter M. Wolanin, Ph.D. >> Momentum Specialist, Acquia. Inc. >> [EMAIL PROTECTED] > > -------------------------- > Grant Ingersoll > > Lucene Helpful Hints: > http://wiki.apache.org/lucene-java/BasicsOfPerformance > http://wiki.apache.org/lucene-java/LuceneFAQ > > > > > > > > > > > -- -------------------------------------------------------------- Peter M. Wolanin, Ph.D. Momentum Specialist, Acquia. Inc. [EMAIL PROTECTED]
