How can I boost a result in SOLR based on a parameter? - apache

Question

I am new to SOLR and I am trying to boost a result based on a parameter "country".
For example, I want to set the country to US and move all the results with US to the top.
This is how I am doing it right now but it doesn't work. :
sort=query({!qf=market v='US'}) desc
This is how the dismax request handler is set up:
<requestHandler name="dismax" class="solr.SearchHandler" >
<lst name="defaults">
<str name="defType">dismax</str>
<str name="echoParams">explicit</str>
<float name="tie">0.01</float>
<str name="qf">
text^0.5 features^1.0 name^1.2 sku^1.5 id^10.0 manu^1.1 cat^1.4
</str>
<str name="pf">
text^0.2 features^1.1 name^1.5 manu^1.4 manu_exact^1.9
</str>
<str name="bf">
popularity^0.5 recip(price,1,1000,1000)^0.3
</str>
<str name="fl">
id,name,price,score
</str>
<str name="mm">
2<-1 5<-2 6<90%
</str>
<int name="ps">100</int>
<str name="q.alt">*:*</str>
<!-- example highlighter config, enable per-query with hl=true -->
<str name="hl.fl">text features name</str>
<!-- for this field, we want no fragmenting, just highlighting -->
<str name="f.name.hl.fragsize">0</str>
<!-- instructs Solr to return the field itself if no query terms are
found -->
<str name="f.name.hl.alternateField">name</str>
<str name="f.text.hl.fragmenter">regex</str> <!-- defined below -->
</lst>
</requestHandler>

Answer 1

If you are using dismax/edismax query parser you can follow the way suggested by Karthik.
But, even if you use the standard query parser, you can query q=market:US^2. This should give you results having more priority where market:US.
Note: "market" is a field and "US" is it's value.