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Large Scale Machine Learning with Python

Large Scale Machine Learning with Python

By : Sjardin, Luca Massaron , Alberto Boschetti
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Large Scale Machine Learning with Python

Large Scale Machine Learning with Python

4 (3)
By: Sjardin, Luca Massaron , 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 (12 chapters)
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11
Index

Chapter 2. Scalable Learning in Scikit-learn

Loading a dataset into memory, preparing a data matrix, training a machine learning algorithm, and testing its generalization capabilities using out-of-sample observations are often not such a big deal given the quite powerful and yet affordable computers of this day and age. However, more and more frequently, the scale of the data to be elaborated is so huge that loading it into the core memory of your computer is not possible and, even if manageable, the result is intractable both in terms of data management and machine learning.

Alternative viable strategies beyond the core memory processing are possible: splitting the data into samples, using parallelism, and finally learning in small batches or by single instances. The present chapter will focus on the out-of-the-box solution that the Scikit-learn package offers: the streaming of mini batches of instances (our observations) from data storage and the incremental learning based on...

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