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mae(double predicted, double actual) – Return a Mean Absolute Error Platforms: WhereOS, Spark, Hive Class:

logress(array features, float target [, constant string options]) – Returns a relation consists of Platforms:

lon2tilex(double lon, int zoom)::int – Returns the tile number of the given longitude and zoom

lower(str) – Returns `str` with all characters changed to lowercase. Platforms: WhereOS, Spark, Hive Class:

log2(expr) – Returns the logarithm of `expr` with base 2. Platforms: WhereOS, Spark, Hive Class:

logloss(double predicted, double actual) – Return a Logrithmic Loss Platforms: WhereOS, Spark, Hive Class: hivemall.evaluation.LogarithmicLossUDAF