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Mastering Machine Learning with Spark 2.x

You're reading from   Mastering Machine Learning with Spark 2.x Harness the potential of machine learning, through spark

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Product type Paperback
Published in Aug 2017
Publisher Packt
ISBN-13 9781785283451
Length 340 pages
Edition 1st Edition
Languages
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Authors (3):
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Alex Tellez Alex Tellez
Author Profile Icon Alex Tellez
Alex Tellez
Michal Malohlava Michal Malohlava
Author Profile Icon Michal Malohlava
Michal Malohlava
Max Pumperla Max Pumperla
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Max Pumperla
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Toc

Ensemble Methods for Multi-Class Classification

Our modern world is already interconnected with many devices for collecting data about human behavior - for example, our cell phones are small spies in our pockets tracking number of steps, route, or our eating habits. Even the watches that we wear now can track everything from the number of steps we take to our heart rate at any given moment in time.

In all these situations, the gadgets try to guess what the user is doing based on collected data to provide reports of the user's activities through the day. From a machine learning perspective, the task can be viewed as a classification problem: detecting patterns in collected data and assigning the right activity category to them (that is, swimming, running, sleeping). But importantly, it is still supervised problem - that means to train a model, we need to provide observations...

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