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From "Chris A. Mattmann (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-1302) Fun with Distances - Add Distance functions for a variety of things
Date Fri, 13 Nov 2009 20:44:39 GMT

    [ https://issues.apache.org/jira/browse/SOLR-1302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12777648#action_12777648
] 

Chris A. Mattmann commented on SOLR-1302:
-----------------------------------------

Hey Grant,

I'd love to help on this issue -- do you have a preference regarding which one of the above
4 that you'd like to work on? All of them? 2 of them?

Let me know -- I'd be happy to write 1 or 2 of them...

Cheers,
Chris


> Fun with Distances - Add Distance functions for a variety of things
> -------------------------------------------------------------------
>
>                 Key: SOLR-1302
>                 URL: https://issues.apache.org/jira/browse/SOLR-1302
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Grant Ingersoll
>            Assignee: Grant Ingersoll
>            Priority: Minor
>             Fix For: 1.5
>
>
> There are many distance functions that are useful to have:
> 1. Great Circle (lat/lon) and other geo distances
> 2. Euclidean (Vector)
> 3. Manhattan (Vector)
> 4. Cosine (Vector)
> For the vector ones, the idea is that the fields on a document can be used to determine
the vector.  

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