Book Image

Building Machine Learning Systems with Python - Third Edition

By : Luis Pedro Coelho, Willi Richert, Matthieu Brucher
Book Image

Building Machine Learning Systems with Python - Third Edition

By: Luis Pedro Coelho, Willi Richert, Matthieu Brucher

Overview of this book

Machine learning enables systems to make predictions based on historical data. Python is one of the most popular languages used to develop machine learning applications, thanks to its extensive library support. This updated third edition of Building Machine Learning Systems with Python helps you get up to speed with the latest trends in artificial intelligence (AI). With this guide’s hands-on approach, you’ll learn to build state-of-the-art machine learning models from scratch. Complete with ready-to-implement code and real-world examples, the book starts by introducing the Python ecosystem for machine learning. You’ll then learn best practices for preparing data for analysis and later gain insights into implementing supervised and unsupervised machine learning techniques such as classification, regression and clustering. As you progress, you’ll understand how to use Python’s scikit-learn and TensorFlow libraries to build production-ready and end-to-end machine learning system models, and then fine-tune them for high performance. By the end of this book, you’ll have the skills you need to confidently train and deploy enterprise-grade machine learning models in Python.
Table of Contents (17 chapters)
Free Chapter
1
Getting Started with Python Machine Learning

Computing features from images

With mahotas, it is very easy to compute features from images. There is a submodule named mahotas.features, where feature computation functions are available.

A commonly used set of texture features is the Haralick set. As with many methods in image processing, the name honors its inventor. These features are texture-based; they distinguish between images that are smooth and those that are patterned, and between different patterns. With mahotas, it is very easy to compute them as follows:

haralick_features = mh.features.haralick(image) 
haralick_features_mean = np.mean(haralick_features, axis=0) 
haralick_features_all = np.ravel(haralick_features) 

The mh.features.haralick function returns a 4 x 13 array. The first dimension refers to four possible directions in which to compute the features (vertical, horizontal, diagonal, and anti-diagonal). If...