coverpage
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Why subscribe?
Customer Feedback
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Downloading the example code
Errata
Piracy
Questions
The Fundamentals of Machine Learning
Defining machine learning
Learning from experience
Machine learning tasks
Training data testing data and validation data
Bias and variance
An introduction to scikit-learn
Installing scikit-learn
Installing using pip
Installing on Windows
Installing on Ubuntu 16.04
Installing on Mac OS
Installing Anaconda
Verifying the installation
Installing pandas Pillow NLTK and matplotlib
Summary
Simple Linear Regression
Simple linear regression
Evaluating the fitness of the model with a cost function
Solving OLS for simple linear regression
Evaluating the model
Summary
Classification and Regression with k-Nearest Neighbors
K-Nearest Neighbors
Lazy learning and non-parametric models
Classification with KNN
Regression with KNN
Scaling features
Summary
Feature Extraction
Extracting features from categorical variables
Standardizing features
Extracting features from text
The bag-of-words model
Stop word filtering
Stemming and lemmatization
Extending bag-of-words with tf-idf weights
Space-efficient feature vectorizing with the hashing trick
Word embeddings
Extracting features from images
Extracting features from pixel intensities
Using convolutional neural network activations as features
Summary
From Simple Linear Regression to Multiple Linear Regression
Multiple linear regression
Polynomial regression
Regularization
Applying linear regression
Exploring the data
Fitting and evaluating the model
Gradient descent
Summary
From Linear Regression to Logistic Regression
Binary classification with logistic regression
Spam filtering
Binary classification performance metrics
Accuracy
Precision and recall
Calculating the F1 measure
ROC AUC
Tuning models with grid search
Multi-class classification
Multi-class classification performance metrics
Multi-label classification and problem transformation
Multi-label classification performance metrics
Summary
Naive Bayes
Bayes' theorem
Generative and discriminative models
Naive Bayes
Assumptions of Naive Bayes
Naive Bayes with scikit-learn
Summary
Nonlinear Classification and Regression with Decision Trees
Decision trees
Training decision trees
Selecting the questions
Information gain
Gini impurity
Decision trees with scikit-learn
Advantages and disadvantages of decision trees
Summary
From Decision Trees to Random Forests and Other Ensemble Methods
Bagging
Boosting
Stacking
Summary
The Perceptron
The perceptron
Activation functions
The perceptron learning algorithm
Binary classification with the perceptron
Document classification with the perceptron
Limitations of the perceptron
Summary
From the Perceptron to Support Vector Machines
Kernels and the kernel trick
Maximum margin classification and support vectors
Classifying characters in scikit-learn
Classifying handwritten digits
Classifying characters in natural images
Summary
From the Perceptron to Artificial Neural Networks
Nonlinear decision boundaries
Feed-forward and feedback ANNs
Multi-layer perceptrons
Training multi-layer perceptrons
Backpropagation
Training a multi-layer perceptron to approximate XOR
Training a multi-layer perceptron to classify handwritten digits
Summary
K-means
Clustering
K-means
Local optima
Selecting K with the elbow method
Evaluating clusters
Image quantization
Clustering to learn features
Summary
Dimensionality Reduction with Principal Component Analysis
Principal component analysis
Variance covariance and covariance matrices
Eigenvectors and eigenvalues
Performing PCA
Visualizing high-dimensional data with PCA
Face recognition with PCA
Summary
更新时间：2021-07-02 19:01:34
完结共147章
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