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From "Grant Ingersoll (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (SOLR-1302) Fun with Distances - Add Distance functions for a variety of things
Date Tue, 17 Nov 2009 15:51:39 GMT

     [ https://issues.apache.org/jira/browse/SOLR-1302?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Grant Ingersoll resolved SOLR-1302.
-----------------------------------

    Resolution: Fixed

I'm going to close this, as I've implemented a bunch of them, with the exception of cosine.
 If someone wants to do that one, they can open a new issue.

> 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
>
>         Attachments: SOLR-1302.patch, SOLR-1302.patch, SOLR-1302.patch
>
>
> 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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