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Practical Machine Learning Cookbook

You're reading from   Practical Machine Learning Cookbook Supervised and unsupervised machine learning simplified

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Product type Paperback
Published in Apr 2017
Publisher Packt
ISBN-13 9781785280511
Length 570 pages
Edition 1st Edition
Languages
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Author (1):
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Atul Tripathi Atul Tripathi
Author Profile Icon Atul Tripathi
Atul Tripathi
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Toc

Table of Contents (15) Chapters Close

Preface 1. Introduction to Machine Learning FREE CHAPTER 2. Classification 3. Clustering 4. Model Selection and Regularization 5. Nonlinearity 6. Supervised Learning 7. Unsupervised Learning 8. Reinforcement Learning 9. Structured Prediction 10. Neural Networks 11. Deep Learning 12. Case Study - Exploring World Bank Data 13. Case Study - Pricing Reinsurance Contracts 14. Case Study - Forecast of Electricity Consumption

Recurrent neural networks - predicting periodic signals

Oscillators are circuits that produce specific, periodic waveforms such as square, triangular, sawtooth, and sinusoidal. In order to generate output, oscillators generally use some form of active device-lamp, which is surrounded by resistors, capacitors, and inductors. Two main classes of oscillators are relaxation and sinusoidal. Triangular, sawtooth and other non-sinusoidal waveforms are generated using relaxation oscillators, while sinusoidal oscillators consist of amplifiers with external components to generate oscillation. Normally, no harmonics are present in pure sine waves and they consist of a single frequency.

Getting ready...

The task is to predict a cosine from a noisy sine wave. 5Hz frequency waves are used for the sine wave with some normally distributed noise and a smooth cosine wave. The dataset created is a set of 10 sequences, each of which consists of 40 observations.

How to do it...

The following packages need to be...

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