:: DeveloperApi :: A tuple of 2 elements.
A class for tracking the statistics of a set of numbers (count, mean and variance) in a numerically robust way.
:: DeveloperApi ::
(Since version 1.0.0) Use Vectors.dense from Spark's mllib.linalg package instead.
:: DeveloperApi :: Estimates the sizes of Java objects (number of bytes of memory they occupy), for use in memory-aware caches.
Utilities for random number generation.