hamming_distance


hamming_distance(integer A, integer B) – Returns Hamming distance between A and B

select
hamming_distance(0,3) as c1,
hamming_distance(“0″,”3”) as c2 — 0=0x00, 3=0x11
;

c1 c2
2 2

Platforms: WhereOS, Spark, Hive
Class: hivemall.knn.distance.HammingDistanceUDF

More functions can be added to WhereOS via Python or R bindings or as Java & Scala UDF (user-defined function), UDAF (user-defined aggregation function) and UDTF (user-defined table generating function) extensions. Custom libraries can be added on via Settings-page or installed from WhereOS Store.

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