[
https://issues.apache.org/jira/browse/LUCENE-6196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14289272#comment-14289272
]
David Smiley commented on LUCENE-6196:
--------------------------------------
I can tell that you've been focused on distance boosting/ranking applications
-- and in that context I see where you're coming from. But it shouldn't at all
be a for-lorn conclusion that the application is going to score/rank the
results by distance. The query might be for analytics to compare a count with
multiple other filters (e.g. time) or it might be a spatial-rich data set like
"tracks" generating from GPS and other sensors matching thousands of points and
once you get into the thousands, I think let alone millions, there would be
benefit to avoiding thousands of DocValiues lookups (random-IO) versus reading
postings for a couple terms or so known to be within the shape.
Any way; thanks again for releasing geo3d here.
> Include geo3d package, along with Lucene integration to make it useful
> ----------------------------------------------------------------------
>
> Key: LUCENE-6196
> URL: https://issues.apache.org/jira/browse/LUCENE-6196
> Project: Lucene - Core
> Issue Type: New Feature
> Components: modules/spatial
> Reporter: Karl Wright
> Assignee: David Smiley
> Attachments: ShapeImpl.java, geo3d.zip
>
>
> I would like to explore contributing a geo3d package to Lucene. This can be
> used in conjunction with Lucene search, both for generating geohashes (via
> spatial4j) for complex geographic shapes, as well as limiting results
> resulting from those queries to those results within the exact shape in
> highly performant ways.
> The package uses 3d planar geometry to do its magic, which basically limits
> computation necessary to determine membership (once a shape has been
> initialized, of course) to only multiplications and additions, which makes it
> feasible to construct a performant BoostSource-based filter for geographic
> shapes. The math is somewhat more involved when generating geohashes, but is
> still more than fast enough to do a good job.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org
For additional commands, e-mail: dev-h...@lucene.apache.org
