Playing with random projection LSH for finding nearest neighbors (in this case, for location data). Simple scala code: https://gist.github.com/4507988
@pankaj no, just physical 3d locations. I'm sure there are more appropriate techniques; this tweet was partly fishing for them :)
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@avibryant I think R-trees are the most popular for geospatial indexing. Might want to check out cousins like quad tree/kd-tree as well.Thanks. Twitter will use this to make your timeline better. UndoUndo
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