H2O is the open source math and prediction engine for Big Data Science.

See:
Description

Packages

hex	The hex package contains math and machine learning algorithms for H2O.
hex.gbm	Gradient Boosting Machine.
hex.glm
hex.gram
hex.pca
hex.rf	Random Forest.
hex.rng	Random number generators.
water	The water package contains the implementation of H2O's core.
water.api	API classes that help implement the embedded web browser interface.
water.deploy	Helper classes that create H2O nodes and clusters for testing.
water.exec	Implementation of the interpreter available in the H2O console.
water.fvec	Fluid Vector API implementation.
water.nbhm	Non-blocking hash map.
water.parser	Data file parser.
water.persist	Classes that read and write from various persisted devices (such as disk) and data sources (such as HDFS).
water.score	Embeddable low latency scoring model.
water.util	Miscellaneous utility classes (for example, for logging).

H2O is the open source math and prediction engine for Big Data Science. The main two package groups are "water" and "hex". The water package contains the implementation of H2O's core, including the distributed key value store, parsing, and I/O. The hex package conceptually layers on top of the water package, and contains math and machine learning algorithms.