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From "Grant Ingersoll (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-2580) Create Components to Support Using Business Rules in Solr
Date Wed, 07 Dec 2011 13:46:40 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13164393#comment-13164393
] 

Grant Ingersoll commented on SOLR-2580:
---------------------------------------

Wiki page is up: http://wiki.apache.org/solr/Business%20Rules
                
> Create Components to Support Using Business Rules in Solr
> ---------------------------------------------------------
>
>                 Key: SOLR-2580
>                 URL: https://issues.apache.org/jira/browse/SOLR-2580
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Tomás Fernández Löbbe
>            Assignee: Grant Ingersoll
>             Fix For: 4.0
>
>
> The goal is to be able to adjust the relevance of documents based on user defined business
rules.
> For example, in a e-commerce site, when the user chooses the "shoes" category, we may
be interested in boosting products from a certain brand. This can be expressed as a rule in
the following way:
> rule "Boost Adidas products when searching shoes"
>     when
>         $qt : QueryTool()
>         TermQuery(term.field=="category", term.text=="shoes")
>     then
>         $qt.boost("{!lucene}brand:adidas");
> end
> The QueryTool object should be used to alter the main query in a easy way. Even more
human-like rules can be written:
> rule "Boost Adidas products when searching shoes"
>  when
>     Query has term "shoes" in field "product"
>  then
>     Add boost query "{!lucene}brand:adidas"
> end
> These rules are written in a text file in the config directory and can be modified at
runtime. Rules will be managed using JBoss Drools: http://www.jboss.org/drools/drools-expert.html
> On a first stage, it will allow to add boost queries or change sorting fields based on
the user query, but it could be extended to allow more options.

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