The grouping (field collapsing) feature somewhat addresses this - group by a
"site" field and then if more than one or a few top pages are from the same
site they get grouped or collapsed so that you can see more sites in a few
results.
See:
http://wiki.apache.org/solr/FieldCollapsing
https://cwiki.apache.org/confluence/display/solr/Result+Grouping
-- Jack Krupansky
-----Original Message-----
From: Sai Gadde
Sent: Thursday, September 05, 2013 2:27 AM
To: solr-user@lucene.apache.org
Subject: Tweaking boosts for more search results variety
Our index is aggregated content from various sites on the web. We want good
user experience by showing multiple sites in the search results. In our
setup we are seeing most of the results from same site on the top.
Here is some information regarding queries and schema
site - String field. We have about 1000 sites in index
sitetype - String field. we have 3 site types
omitNorms="true" for both the fields
Doc count varies largely based on site and sitetype by a factor of 10 -
1000 times
Total index size is about 5 million docs.
Solr Version: 4.0
In our queries we have a fixed and preferential boost for certain sites.
sitetype has different and fixed boosts for 3 possible values. We turned
off Inverse Document Frequency (IDF) for these boosts to work properly.
Other text fields are boosted based on search keywords only.
With this setup we often see a bunch of hits from a single site followed by
next etc.,
Is there any solution to see results from variety of sites and still keep
the preferential boosts in place?
