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Intelligent Projects Using Python

You're reading from   Intelligent Projects Using Python 9 real-world AI projects leveraging machine learning and deep learning with TensorFlow and Keras

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Product type Paperback
Published in Jan 2019
Publisher Packt
ISBN-13 9781788996921
Length 342 pages
Edition 1st Edition
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Author (1):
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Santanu Pattanayak Santanu Pattanayak
Author Profile Icon Santanu Pattanayak
Santanu Pattanayak
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Table of Contents (12) Chapters Close

Preface 1. Foundations of Artificial Intelligence Based Systems FREE CHAPTER 2. Transfer Learning 3. Neural Machine Translation 4. Style Transfer in Fashion Industry using GANs 5. Video Captioning Application 6. The Intelligent Recommender System 7. Mobile App for Movie Review Sentiment Analysis 8. Conversational AI Chatbots for Customer Service 9. Autonomous Self-Driving Car Through Reinforcement Learning 10. CAPTCHA from a Deep-Learning Perspective 11. Other Books You May Enjoy

Cross-validation

Since the training dataset is small, we will perform five-fold cross-validation, to get a better sense of the model's ability to generalize to new data. We will also use all five of the models built in the different folds of cross-validation in training, for inference. The probability of a test data point belonging to a class label would be the average probability prediction of all five models, which is represented as follows:

Since the aim is to predict the actual classes and not the probability, we would select the class that has the maximum probability. This methodology works when we are working with a classification-based network and cost function. If we are treating the problem as a regression problem, then there are a few alterations to the process, which we will discuss later on.

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