I found the example confusing in http://scikit-learn.org for the DBSCAN algorithm. I have a list of latitude and longitudes and was curious how to prepare the input for the the DBSCAN algorithm here.
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I recommend using ELKI, which can use Geodetic distance and R*-tree indexes at the same time, to substantially speed up the algorithm. – Has QUIT--Anony-Mousse Jan 11 '14 at 13:32
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Is ELKI implemented in python? – megv Jan 11 '14 at 21:41
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No. But it's the only tool I know which has the capability of accelerating DBSCAN with geodetic distance. – Has QUIT--Anony-Mousse Jan 11 '14 at 23:12
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Just provided an answer to a similar question. https://stackoverflow.com/questions/36816084/clustering-longitude-and-latitude-gps-data/39937326#39937326 – Gengyu Shi Oct 08 '16 at 21:08