- In an autoencoder, both the encoder and decoder must be structurally symmetric. Is this correct?
- Given a dataset,
*X*, and its transformation,*Y*, based on the code yielded by an autoencoder, all of the information contained in*X*can be found in*Y*. Is this correct? - A code,
*z*has_{i}∈ (0, 1)^{128}*sum(z*. Is it sparse?_{i}) = 36 - If
*std(z*, is the code sparse?_{i}) = 0.03 - A Sanger's network requires covariance matrix columns as input vectors. Is this correct?
- How can we determine the importance of each component extracted by a Rubner-Tavan network?
- Given a random vector,
*h*(_{i}∈ ℜ^{m}*m*is the output dimensionality of a DBN), is it possible to determine the most likely corresponding input sample?

#### Hands-On Unsupervised Learning with Python

##### By :

#### Hands-On Unsupervised Learning with Python

##### By:

#### Overview of this book

Unsupervised learning is about making use of raw, untagged data and applying learning algorithms to it to help a machine predict its outcome. With this book, you will explore the concept of unsupervised learning to cluster large sets of data and analyze them repeatedly until the desired outcome is found using Python.
This book starts with the key differences between supervised, unsupervised, and semi-supervised learning. You will be introduced to the best-used libraries and frameworks from the Python ecosystem and address unsupervised learning in both the machine learning and deep learning domains. You will explore various algorithms, techniques that are used to implement unsupervised learning in real-world use cases. You will learn a variety of unsupervised learning approaches, including randomized optimization, clustering, feature selection and transformation, and information theory. You will get hands-on experience with how neural networks can be employed in unsupervised scenarios. You will also explore the steps involved in building and training a GAN in order to process images.
By the end of this book, you will have learned the art of unsupervised learning for different real-world challenges.

Table of Contents (12 chapters)

Preface

Free Chapter

Getting Started with Unsupervised Learning

Clustering Fundamentals

Advanced Clustering

Hierarchical Clustering in Action

Soft Clustering and Gaussian Mixture Models

Anomaly Detection

Dimensionality Reduction and Component Analysis

Unsupervised Neural Network Models

Generative Adversarial Networks and SOMs

Assessments

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