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Modern Time Series Forecasting with Python

You're reading from   Modern Time Series Forecasting with Python Industry-ready machine learning and deep learning time series analysis with PyTorch and pandas

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Product type Paperback
Published in Oct 2024
Publisher Packt
ISBN-13 9781835883181
Length 658 pages
Edition 2nd Edition
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Authors (2):
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Jeffrey Tackes Jeffrey Tackes
Author Profile Icon Jeffrey Tackes
Jeffrey Tackes
Manu Joseph Manu Joseph
Author Profile Icon Manu Joseph
Manu Joseph
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Toc

Table of Contents (26) Chapters Close

Preface 1. Part-1: Getting Familiar with Time Series FREE CHAPTER
2. Introducing Time Series 3. Acquiring and Processing Time Series Data 4. Analyzing and Visualizing Time Series Data 5. Setting a Strong Baseline Forecast 6. Part-2: Machine Learning for Time Series
7. Time Series Forecasting as Regression 8. Feature Engineering for Time Series Forecasting 9. Target Transformations for Time Series Forecasting 10. Forecasting Time Series with Machine Learning Models 11. Ensembling and Stacking 12. Global Forecasting Models 13. Part-3: Deep Learning for Time Series
14. Introduction to Deep Learning 15. Building Blocks of Deep Learning for Time Series 16. Common Modeling Patterns for Time Series 17. Attention and Transformers for Time Series 18. Strategies for Global Deep Learning Forecasting Models 19. Specialized Deep Learning Architectures for Forecasting 20. Probabilistic Forecasting and More 21. Part-4: Mechanics of Forecasting
22. Multi-Step Forecasting 23. Evaluating Forecast Errors—A Survey of Forecast Metrics 24. Evaluating Forecasts—Validation Strategies 25. Index

Assessing the forecastability of a time series

Although there are many statistical measures that we can use to assess the predictability of a time series, we will just look at a few that are easier to understand and practical when dealing with large time series datasets. The associated notebook (02-Forecastability.ipynb) contains the code to follow along.

Coefficient of Variation (CoV)

The Coefficient of Variation (CoV) relies on the intuition that the more variability that you find in a time series, the harder it is to predict it. And how do we measure variability in a random variable? Standard deviation.

In many real-world time series, the variation we see in the time series is dependent on the scale of the time series. Let's imagine that there are two retail products, A and B. A has a mean monthly sale of 15, while B has 50. If we look at a few real-world examples like this, we will see that if A and B have the same standard deviation, B, which has a higher mean, is much more...

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