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https://issues.apache.org/jira/browse/SOLR-11943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16607095#comment-16607095
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Joel Bernstein commented on SOLR-11943:
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I'll be adding documentation today to the Math Expression user guide for how to
use these particular functions. I have no problem renaming the Java class. The
user facing Math Expression is called "locationVectors" currently based on the
"location" field type in the schema. We could have the function be called
"latlonVectors" as well but location sounds a little nicer.
I can add some Java doc as well when I add the user guide docs.
> Add machine learning functions for location data
> ------------------------------------------------
>
> Key: SOLR-11943
> URL: https://issues.apache.org/jira/browse/SOLR-11943
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Joel Bernstein
> Assignee: Joel Bernstein
> Priority: Major
> Fix For: master (8.0), 7.5
>
> Attachments: SOLR-11943.patch
>
>
> This ticket will add the following functions / features:
> 1) *locationVectors* function: Reads a list of tuples that contain a
> *location* field type and returns a *matrix* of lat/long vectors.
> 2) Add support for *haversinMeters* distance measure.
> With the addition of these two functions we'll have the ability to do various
> distance based machine learning algorithms (distance matrices, clustering,
> knn regression etc...) with location data.
>
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