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https://issues.apache.org/jira/browse/SOLR-11943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16607073#comment-16607073
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David Smiley commented on SOLR-11943:
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Wow this went in quick but didn't escape my notice.
* Can we rename this to use "LatLon", or "spatial" or "geo" or "geospatial"
terminology instead of "location"? "Location" I think is too vague. For this
particular component, I think "LatLonVectorsEvaluator" would most clarify what
it does.
* Can we rename "long" inside here to "lon" as it's aesthetically more aligned
with "lat" abbreviation (also 3 letters and not overloaded with Java keyword).
* Even a one-liner class javadoc is helpful; I see none here. For example,
shouldn't it be clearly documented what the inputs/outputs are for
LocationVector? It's a shame the return declared type is "Object" and not
"Matrix" (and even then a matrix is untyped so needs clarification of its
nature (e.g. labels)).
> 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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