[jira] [Commented] (SOLR-14590) Add support for FeatureField in Solr

["Tomas Eduardo Fernandez Lobbe (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-14590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17144109#comment-17144109 ] 

Tomas Eduardo Fernandez Lobbe commented on SOLR-14590:
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Discussed this briefly with [~varun] yesterday via Slack. For queries, the idea is to have a new query parser that can take the parameters and function to use, and can be added either to a {{bq}} parameter in a {{dismax}} query, or can be added to a {{lucene}} query using subqueries, like using {{_query_}} magic field. Something like
{code:java}
bq={!rank f=myFeatureField function=log weight=2 scalingFactor=1}pagerank
{code}
For index time, we could have a syntax like {{featureName:featureValue}}. So, when someone is using SolrJ they would just add a field like:
{code:java}
doc.setField("myFeatureField", "pagerank:2");
{code}

> Add support for FeatureField in Solr
> ------------------------------------
>
>                 Key: SOLR-14590
>                 URL: https://issues.apache.org/jira/browse/SOLR-14590
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Tomas Eduardo Fernandez Lobbe
>            Priority: Major
>
> {{FeatureField}}’s allow users to store scoring factors in the index that are encoded as term frequencies. By doing this, {{FeatureFields}} can be used in combination with the {{minExactCount}} parameter to skip over non-competitive documents, and produce results faster. See LUCENE-8197



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