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Machine Learning Algorithms

Machine Learning Algorithms

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Machine Learning Algorithms

Machine Learning Algorithms

Overview of this book

Machine learning has gained tremendous popularity for its powerful and fast predictions with large datasets. However, the true forces behind its powerful output are the complex algorithms involving substantial statistical analysis that churn large datasets and generate substantial insight. This second edition of Machine Learning Algorithms walks you through prominent development outcomes that have taken place relating to machine learning algorithms, which constitute major contributions to the machine learning process and help you to strengthen and master statistical interpretation across the areas of supervised, semi-supervised, and reinforcement learning. Once the core concepts of an algorithm have been covered, you’ll explore real-world examples based on the most diffused libraries, such as scikit-learn, NLTK, TensorFlow, and Keras. You will discover new topics such as principal component analysis (PCA), independent component analysis (ICA), Bayesian regression, discriminant analysis, advanced clustering, and gaussian mixture. By the end of this book, you will have studied machine learning algorithms and be able to put them into production to make your machine learning applications more innovative.
Table of Contents (24 chapters)
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Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

A brief introduction to TensorFlow


TensorFlow is a computational framework created by Google and has become one of the most diffused deep learning toolkits. It can work with both CPUs and GPUs and already implements most of the operations and structures required to build and train a complex model. TensorFlow can be installed as a Python package on Linux, macOS, and Windows (with or without GPU support). However, I suggest you follow the instructions provided on the website (the link can be found in the info box at the end of this chapter) to avoid common mistakes and install it in the best way considering every specific environment.

The main concept behind TensorFlow is the computational graph or a set of subsequent operations that transform an input batch into the desired output. In the following diagram, there's a schematic representation of a graph:

Example of simple computational graph

Starting from the bottom, we have two input nodes (a and b), a transpose operation (that works on b),...

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