I have been playing around with the bq/bf/boost query parameters available in
dismax/edismax. I am using the Lucid parser as my default parser for the query.
The lucid parser is an extension of the DisMax parser and should contain
everything that is available in that parser. My goal is boost items that have
the word treatment in the title field. I started with the bq parameter and this
works but it is an additive boost. I would prefer a multiplicative boost so I
started to look at using boost which is part of edismax.
This is my full query:
/lucid?q=cancer&sort=score+desc&fl=title,score&wt=xml&indent=true&debugQuery=true&boost=product(10,query({!dismax
qf="title" v="treatment"},0))
What I see in the debug data:
<str name="parsedquery">BoostedQuery(boost((abstract:blood | author:blood |
origtitle:blood | substance:blood | text_all:blood |
title:blood^5.0)~0.01,product(const(10),query(+(title:treatment)
(abstract:treatment | author:treatment | substance:treatment |
title:treatment^5.0 | text_all:treatment |
origtitle:treatment),def=0.0))))</str>
<str name="parsedquery_toString">boost((abstract:blood | author:blood |
origtitle:blood | substance:blood | text_all:blood |
title:blood^5.0)~0.01,product(const(10),query(+(title:treatment)
(abstract:treatment | author:treatment | substance:treatment |
title:treatment^5.0 | text_all:treatment | origtitle:treatment),def=0.0)))</str>
In the boost query I am specifying the field as title but it is expanding to
look in all of the fields.
How do I restrict the boost query to just look in the title field?
Thanks,
Will
