Hello Mark, You could have position information play a role in scoring if you use Span* family of queries. I believe they are currently not supported by Solr, but I believe you could use QSolr + https://issues.apache.org/jira/browse/SOLR-896 to get what you need.
As for assigning different weight to fields, have a look at DisMax request handler - http://wiki.apache.org/solr/DisMaxRequestHandler#head-af452050ee272a1c88e2ff89dc0012049e69e180 Otis -- Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch ----- Original Message ---- > From: Mark Tovey <mto...@ionagroup.com> > To: solr-user@lucene.apache.org > Sent: Thursday, January 8, 2009 12:16:39 PM > Subject: Querying based on term position possible? > > I'm a relative newbie at Solr/Lucene so apologies if this question is > overly simplistic. I have an index built and functioning as expected, > but I am trying to build a query that can sort/score results based on > the search terms position in the document, with a document appearing > higher in the results list if the term appears earlier in the document. > For example, "Red fox in the forest" would be scored over "My shoes are > red today and my shirt is also red" if I search for the term "red". It > seems to me that the default scoring algorithm is based more on the term > frequency than term position, though this may be a simplistic > interpretation. Does anyone on the list know if there is a way to > achieve my desired results by structuring a query a certain way, or is > this more of an indexing issue where I should have set a parameter(s) in > my schema to a certain value? Any help is hugely appreciated as I have > been puzzling away at this for the past couple of days with no success. > > > > Alternatively, is there a way to query on two fields for a search term > with documents being placed higher in the results if the term occurs in > field1 over field2? I ask this because one of the fields in my schema > (title in this case) is more deemed more important in our scenario than > the "text" field (which holds the title plus the contents of the > remainder of the document). I tried, for example, title:red text:red but > again was stumped on the syntax to place an "importance" variable on > field1 over field2. > > > > Of course, it may be that what I'm trying to accomplish is simply not > doable with the Lucene engine, at which point feel free to point out the > error of my ways ;) > > > > Regards, > > --Mark Tovey
