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Python Machine Learning Cookbook - Second Edition

By : Giuseppe Ciaburro, Joshi

Buy this Book

Python Machine Learning Cookbook

By: Giuseppe Ciaburro, Joshi

Buy this Book

Overview of this book

This eagerly anticipated second edition of the popular Python Machine Learning Cookbook will enable you to adopt a fresh approach to dealing with real-world machine learning and deep learning tasks. With the help of over 100 recipes, you will learn to build powerful machine learning applications using modern libraries from the Python ecosystem. The book will also guide you on how to implement various machine learning algorithms for classification, clustering, and recommendation engines, using a recipe-based approach. With emphasis on practical solutions, dedicated sections in the book will help you to apply supervised and unsupervised learning techniques to real-world problems. Toward the concluding chapters, you will get to grips with recipes that teach you advanced techniques including reinforcement learning, deep neural networks, and automated machine learning. By the end of this book, you will be equipped with the skills you need to apply machine learning techniques and leverage the full capabilities of the Python ecosystem through real-world examples.

Preface

Who this book is for

What this book covers

To get the most out of this book

Sections

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Free Chapter

The Realm of Supervised Learning

Technical requirements

Introduction

Array creation in Python

Data preprocessing using mean removal

Data scaling

Normalization

Binarization

One-hot encoding

Label encoding

Building a linear regressor

Computing regression accuracy

Achieving model persistence

Building a ridge regressor

Building a polynomial regressor

Estimating housing prices

Computing the relative importance of features

Estimating bicycle demand distribution

Constructing a Classifier

Technical requirements

Introduction

Building a simple classifier

Building a logistic regression classifier

Building a Naive Bayes classifier

Splitting a dataset for training and testing

Evaluating accuracy using cross-validation metrics

Visualizing a confusion matrix

Extracting a performance report

Evaluating cars based on their characteristics

Extracting validation curves

Extracting learning curves

Estimating the income bracket

Predicting the quality of wine

Newsgroup trending topics classification

Predictive Modeling

Technical requirements

Introduction

Building a linear classifier using SVMs

Building a nonlinear classifier using SVMs

Tackling class imbalance

Extracting confidence measurements

Finding optimal hyperparameters

Building an event predictor

Estimating traffic

Simplifying machine learning workflow using TensorFlow

Implementing a stacking method

Clustering with Unsupervised Learning

Technical requirements

Introduction

Clustering data using the k-means algorithm

Compressing an image using vector quantization

Grouping data using agglomerative clustering

Evaluating the performance of clustering algorithms

Estimating the number of clusters using the DBSCAN algorithm

Finding patterns in stock market data

Building a customer segmentation model

Using autoencoders to reconstruct handwritten digit images

Visualizing Data

Technical requirements

An introduction to data visualization

Plotting three-dimensional scatter plots

Plotting bubble plots

Animating bubble plots

Drawing pie charts

Plotting date-formatted time series data

Plotting histograms

Visualizing heat maps

Animating dynamic signals

Working with the Seaborn library

Building Recommendation Engines

Technical requirements

Introducing the recommendation engine

Building function compositions for data processing

Building machine learning pipelines

Finding the nearest neighbors

Constructing a k-nearest neighbors classifier

Constructing a k-nearest neighbors regressor

Computing the Euclidean distance score

Computing the Pearson correlation score

Finding similar users in the dataset

Generating movie recommendations

Implementing ranking algorithms

Building a filtering model using TensorFlow

Analyzing Text Data

Technical requirements

Introduction

Preprocessing data using tokenization

Stemming text data

Converting text to its base form using lemmatization

Dividing text using chunking

Building a bag-of-words model

Building a text classifier

Identifying the gender of a name

Analyzing the sentiment of a sentence

Identifying patterns in text using topic modeling

Parts of speech tagging with spaCy

Word2Vec using gensim

Shallow learning for spam detection

Speech Recognition

Technical requirements

Introducing speech recognition

Reading and plotting audio data

Transforming audio signals into the frequency domain

Generating audio signals with custom parameters

Synthesizing music

Extracting frequency domain features

Building HMMs

Building a speech recognizer

Building a TTS system

Dissecting Time Series and Sequential Data

Technical requirements

Introducing time series

Transforming data into a time series format

Slicing time series data

Operating on time series data

Extracting statistics from time series data

Building HMMs for sequential data

Building CRFs for sequential text data

Analyzing stock market data

Using RNNs to predict time series data

Analyzing Image Content

Technical requirements

Introducing computer vision

Operating on images using OpenCV-Python

Detecting edges

Histogram equalization

Detecting corners

Detecting SIFT feature points

Building a Star feature detector

Creating features using Visual Codebook and vector quantization

Training an image classifier using Extremely Random Forests

Building an object recognizer

Using Light GBM for image classification

Biometric Face Recognition

Technical requirements

Introduction

Capturing and processing video from a webcam

Building a face detector using Haar cascades

Building eye and nose detectors

Performing principal component analysis

Performing kernel principal component analysis

Performing blind source separation

Building a face recognizer using a local binary patterns histogram

Recognizing faces using the HOG-based model

Facial landmark recognition

User authentication by face recognition

Reinforcement Learning Techniques

Technical requirements

Introduction

Weather forecasting with MDP

Optimizing a financial portfolio using DP

Finding the shortest path

Deciding the discount factor using Q-learning

Implementing the deep Q-learning algorithm

Developing an AI-based dynamic modeling system

Deep reinforcement learning with double Q-learning

Deep Q-network algorithm with dueling Q-learning

Deep Neural Networks

Technical requirements

Introduction

Building a perceptron

Building a single layer neural network

Building a deep neural network

Creating a vector quantizer

Building a recurrent neural network for sequential data analysis

Visualizing the characters in an OCR database

Building an optical character recognizer using neural networks

Implementing optimization algorithms in ANN

Unsupervised Representation Learning

Technical requirements

Introduction

Using denoising autoencoders to detect fraudulent transactions

Generating word embeddings using CBOW and skipgram representations

Visualizing the MNIST dataset using PCA and t-SNE

Using word embedding for Twitter sentiment analysis

Implementing LDA with scikit-learn

Using LDA to classify text documents

Preparing data for LDA

Automated Machine Learning and Transfer Learning

Technical requirements

Introduction

Working with Auto-WEKA

Using AutoML to generate machine learning pipelines with TPOT

Working with Auto-Keras

Working with auto-sklearn

Using MLBox for selection and leak detection

Convolutional neural networks with transfer learning

Transfer learning with pretrained image classifiers using ResNet-50

Transfer learning using feature extraction with the VGG16 model

Transfer learning with pretrained GloVe embedding

Unlocking Production Issues

Technical requirements

Introduction

Handling unstructured data

Deploying machine learning models

Keeping track of changes into production

Tracking accuracy to optimize model scaling

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The Realm of Supervised Learning

In this chapter, we will cover the following recipes:

Array creation in Python
Data preprocessing using mean removal
Data scaling
Normalization
Binarization
One-hot encoding
Label encoding
Building a linear regressor
Computing regression accuracy
Achieving model persistence
Building a ridge regressor
Building a polynomial regressor
Estimating housing prices
Computing the relative importance of features
Estimating bicycle demand distribution

Tech Concepts

Programming languages

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Python Machine Learning Cookbook - Second Edition

By : Giuseppe Ciaburro, Joshi

Python Machine Learning Cookbook

By: Giuseppe Ciaburro, Joshi

Overview of this book

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