The MADlib Analytics Library or MAD Skills, the SQL

Understand

MADlib is a free, open source library of in-database analytic methods.

• It provides an evolving suite of SQL-based algorithms for machine learning, data mining and statistics that run at scale within a database engine, with no need for data import/export to other tools.
• The goal is for MADlib to eventually serve a role for scalable database systems that is similar to the CRAN library for R: a community repository of statistical methods, this time written with scale and parallelism in mind.
• In this paper we introduce the MADlib project, including the background that led to its beginnings, and the motivation for its open source nature.