Hi Grant, In my case, for example searching a book. Some of the returned documents are with high relevance (score > 3), but some of document with low score (<0.01) are useless.
Without a "score filter", I have to go through each document to find out the number of documents I'm interested (score > nnn). This causes some problem for pagination. For example if I only need to display the first 10 records I need to retrieve all 1000 documents to figure out the number of meaningful documents which have score > nnn. Thx, Kevin ----- Original Message ---- From: Grant Ingersoll <gsing...@apache.org> To: solr-user@lucene.apache.org Sent: Wednesday, February 11, 2009 6:47:11 AM Subject: Re: score filter What's the motivation for wanting to do this? The reason I ask, is score is a relative thing determined by Lucene based on your index statistics. It is only meaningful for comparing the results of a specific query with a specific instance of the index. In other words, it isn't useful to filter on b/c there is no way of knowing what a good cutoff value would be. So, you won't be able to do score:[1.2 TO *] because score is a not an actual Field. That being said, you probably could implement a HitCollector at the Lucene level and somehow hook it into Solr to do what you want. Or, of course, just stop processing the results in your app after you see a score below a certain value. Naturally, this still means you have to retrieve the results. -Grant On Feb 10, 2009, at 10:01 PM, Cheng Zhang wrote: > Hello, > > Is there a way to set a score filter? I tried "+score:[1.2 TO *]" but it did > not work. > > Many thanks, > Kevin > -------------------------- Grant Ingersoll http://www.lucidimagination.com/ Search the Lucene ecosystem (Lucene/Solr/Nutch/Mahout/Tika/Droids) using Solr/Lucene: http://www.lucidimagination.com/search
