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Machine Learning for Finance

You're reading from   Machine Learning for Finance Principles and practice for financial insiders

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Product type Paperback
Published in May 2019
Publisher Packt
ISBN-13 9781789136364
Length 456 pages
Edition 1st Edition
Languages
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Authors (2):
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Jannes Klaas Jannes Klaas
Author Profile Icon Jannes Klaas
Jannes Klaas
James Le James Le
Author Profile Icon James Le
James Le
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Table of Contents (15) Chapters Close

Machine Learning for Finance
Contributors
Preface
Other Books You May Enjoy
1. Neural Networks and Gradient-Based Optimization 2. Applying Machine Learning to Structured Data FREE CHAPTER 3. Utilizing Computer Vision 4. Understanding Time Series 5. Parsing Textual Data with Natural Language Processing 6. Using Generative Models 7. Reinforcement Learning for Financial Markets 8. Privacy, Debugging, and Launching Your Products 9. Fighting Bias 10. Bayesian Inference and Probabilistic Programming Index

Chapter 4. Understanding Time Series

A time series is a form of data that has a temporal dimension and is easily the most iconic form of financial data out there. While a single stock quote is not a time series, take the quotes you get every day and line them up, and you get a much more interesting time series. Virtually all media materials related to finance sooner or later show a stock price gap; not a list of prices at a given moment, but a development of prices over time.

You'll often hear financial commenters discussing the movement of prices: "Apple Inc. is up 5%." But what does that mean? You'll hear absolute values a lot less, such as, "A share of Apple Inc. is $137.74." Again, what does that mean? This occurs because market participants are interested in how things will develop in the future and they try to extrapolate these forecasts from how things developed in the past:

Multiple time series graphs as seen on Bloomberg TV

Most forecasting that is done involves looking at past developments...

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