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https://issues.apache.org/jira/browse/SOLR-11943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16607099#comment-16607099
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Joel Bernstein commented on SOLR-11943:
---------------------------------------
The Math Expression user guide is being release with Solr 7.5:
[https://github.com/apache/lucene-solr/blob/master/solr/solr-ref-guide/src/math-expressions.adoc]
I'll be adding sections under *Streams and Vectorization* for the
locationVectors and under *Machine Learning* for the haversineMeters function.
Overtime I'll likely add a full section Geospatial math expressions.
> 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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