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Data Science  with Python

You're reading from   Data Science with Python Combine Python with machine learning principles to discover hidden patterns in raw data

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Product type Paperback
Published in Jul 2019
Publisher Packt
ISBN-13 9781838552862
Length 426 pages
Edition 1st Edition
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Authors (3):
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Rohan Chopra Rohan Chopra
Author Profile Icon Rohan Chopra
Rohan Chopra
Mohamed Noordeen Alaudeen Mohamed Noordeen Alaudeen
Author Profile Icon Mohamed Noordeen Alaudeen
Mohamed Noordeen Alaudeen
Aaron England Aaron England
Author Profile Icon Aaron England
Aaron England
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Toc

Table of Contents (10) Chapters Close

About the Book 1. Introduction to Data Science and Data Pre-Processing FREE CHAPTER 2. Data Visualization 3. Introduction to Machine Learning via Scikit-Learn 4. Dimensionality Reduction and Unsupervised Learning 5. Mastering Structured Data 6. Decoding Images 7. Processing Human Language 8. Tips and Tricks of the Trade 1. Appendix

Data Augmentation

While training machine learning models, we data scientists often run into the problem of imbalanced classes and a lack of training data. This leads to sub-par models that perform poorly when deployed in real-life scenarios. One easy way to deal with these problems is data augmentation. There are multiple ways of performing data augmentation, such as rotating the image, shifting the object, cropping an image, shearing to distort the image, and zooming in to a part of the image, as well as more complex methods such as using Generative Adversarial Networks (GANs) to generate new images. GANs are simply two neural networks that are competing with each other. A generator network tries to make images that are similar to the already existing images, while a discriminator network tries to determine if the image was generated or was part of the original data. After the training is complete, the generator network is able to create images that are not a part of the original data but...

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