Book Image

Mastering Predictive Analytics with scikit-learn and TensorFlow

By : Alvaro Fuentes
Book Image

Mastering Predictive Analytics with scikit-learn and TensorFlow

By: Alvaro Fuentes

Overview of this book

Python is a programming language that provides a wide range of features that can be used in the field of data science. Mastering Predictive Analytics with scikit-learn and TensorFlow covers various implementations of ensemble methods, how they are used with real-world datasets, and how they improve prediction accuracy in classification and regression problems. This book starts with ensemble methods and their features. You will see that scikit-learn provides tools for choosing hyperparameters for models. As you make your way through the book, you will cover the nitty-gritty of predictive analytics and explore its features and characteristics. You will also be introduced to artificial neural networks and TensorFlow, and how it is used to create neural networks. In the final chapter, you will explore factors such as computational power, along with improvement methods and software enhancements for efficient predictive analytics. By the end of this book, you will be well-versed in using deep neural networks to solve common problems in big data analysis.
Table of Contents (7 chapters)

Classification with DNNs

For understanding classification with DNNs, we first have to understand the concept of exponential linear unit function and the elements of the model.

Exponential linear unit activation function

The Exponential Linear Unit (ELU) function is a relatively recent modification to the ReLU function. It looks very similar to the ReLU function, but it has very different mathematical properties. The following screenshot shows the ELU function:

The preceding screenshot shows that, at 0, we don't have a corner. In the case of the ReLU function, we have a corner. In this function, instead of a single value going to 0, we have the ELU function slowly going to the negative alpha parameter.

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