If you went with the FunctionQuery approach for sorting by distance, would there be any way to use the output of the FunctionQuery to limit the documents to those within a certain radius? Or is it just for boosting documents, not for filtering?
Also, even if you're just using it for boosting, is there a way to avoid running the expensive function on all docs in the index? Could you somehow nest bounding-box RangeQuery for latitude and longitude inside as ValueSources? Thanks, Doug hossman wrote: > > > : leaks, etc.). (Speaking of which, could anyone with more Lucene/Solr > : experience than I comment on the performance characteristics of the > : locallucene implementation mentioned on the list recently? I've taken > : a first look and it seems reasonable to me.) > > i cna't speak for anyone else, but i haven't had a chacne to drill into it > yet. > > : Using a function query, as Yonik suggests above, is another approach. > : But to get a true sort, you have to boost the original query to zero? > > or a very close approximation there of (0.000001 perhaps) > > keep in mind: a "true" distance sort while easy to explain may not be as > useful as a sort by score where the distance is factored into the score > ... there have been some threads about this on the java-user list in the > past and it's been discussed that a really relevant result 2 miles away is > probably better then a mildly relevent result 1.5 miles away ... that's > where a function query with well choosen boosts might serve you better. > > : How does this impact the results returned by the original query? Will > : the requirements (and boosts) of the original (now nested) query > : remain intact, only sorted by the function? Also, is there any way to > > it should ... but i won't swear to that. > > : do this with the dismax handler? > > a strict sort on the value of a a function? put the function in the bf > param, don't bother with bq or pf params and change your qf params to all > have really small boosts. > > > > -Hoss > > > -- View this message in context: http://www.nabble.com/custom-sorting-tf4521989.html#a13436617 Sent from the Solr - User mailing list archive at Nabble.com.
