Book Image

Large Scale Machine Learning with Python

By : Bastiaan Sjardin, Alberto Boschetti
Book Image

Large Scale Machine Learning with Python

By: Bastiaan Sjardin, Alberto Boschetti

Overview of this book

Large Python machine learning projects involve new problems associated with specialized machine learning architectures and designs that many data scientists have yet to tackle. But finding algorithms and designing and building platforms that deal with large sets of data is a growing need. Data scientists have to manage and maintain increasingly complex data projects, and with the rise of big data comes an increasing demand for computational and algorithmic efficiency. Large Scale Machine Learning with Python uncovers a new wave of machine learning algorithms that meet scalability demands together with a high predictive accuracy. Dive into scalable machine learning and the three forms of scalability. Speed up algorithms that can be used on a desktop computer with tips on parallelization and memory allocation. Get to grips with new algorithms that are specifically designed for large projects and can handle bigger files, and learn about machine learning in big data environments. We will also cover the most effective machine learning techniques on a map reduce framework in Hadoop and Spark in Python.
Table of Contents (17 chapters)
Large Scale Machine Learning with Python
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
Index

Machine learning with Spark


Here, we arrive at the main task of your job: creating a model to predict one or multiple attributes missing in the dataset. For this, we use some machine learning modeling, and Spark can provide us with a big hand in this context.

MLlib is the Spark machine learning library; although it is built in Scala and Java, its functions are also available in Python. It contains classification, regression, and recommendation learners, some routines for dimensionality reduction and feature selection, and has lots of functionalities for text processing. All of them are able to cope with huge datasets and use the power of all the nodes in the cluster to achieve the goal.

As of now (2016), it's composed of two main packages: mllib, which operates on RDDs, and ml, which operates on DataFrames. As the latter performs well and the most popular way to represent data in data science, developers have chosen to contribute and improve the ml branch, letting the former remain, but without...