The 100 Page Machine Learning Book

The 100 Page Machine Learning Book

This is a 100 page book that covers the basics of machine learning. You’ll learn about the different types of machine learning, how they work, and how to apply them in real-world situations.

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Table of Contents

1. What is Machine Learning?
2. A Brief History of Machine Learning
3. Types of Machine Learning Algorithms
4. Supervised Learning
5. Unsupervised Learning
6. Reinforcement Learning
7. Deep Learning
8. Getting Started with Machine Learning
9. The Math Behind Machine Learning
10. implement Machine Learning Algorithms
11. Case Studies in Machine Learning
12. resources for Further Learning

Data Preprocessing

One of the most important steps in any machine learning project is data preprocessing. This step is usually performed before training the model and it involves a number of activities such as:

-Data cleaning: getting rid of missing values, outliers, etc.
-Data transformation: normalization, one-hot encoding, etc.
-Data split: dividing the data into training, validation and test sets.

Each of these activities is important in its own right and performing all of them properly is crucial for the success of the project. In this chapter, we will take a closer look at each of these activities and see how to perform them in Python.

Data Visualization

Data visualization is the process of creating graphical representations of data sets in order to gain insight into the relationships between variables,patterns, and trends. Data visualizations can take many forms, including line graphs, bar charts, scatter plots, and maps.

The purpose of data visualization is to help people see relationships in data sets that they might not be able to see otherwise. By using visuals, people can more easily understand complex concepts and make better decisions.

There are a few things to keep in mind when creating data visualizations:
– Use the right type of chart or graph for the data you’re trying to represent. For example, use a line graph to show a trend over time.
– Make sure the visuals are clear and easy to understand. Avoid clutter and distrracting elements.
– Use colors wisely. Too much color can be overwhelming, but well-chosen colors can help guide the viewer’s eye to important information.


In statistics, regression is a technique used to model and analyze relationships between variables. Regression can be used to identify which factors influence the dependent variable, and to what extent they do so. It can also be used to predict the value of the dependent variable for given values of the independent variables.

There are two main types of regression: linear regression and nonlinear regression. Linear regression is used when the dependent variable is a continuous quantity, and nonlinear regression is used when the dependent variable is a categorical quantity.

Regression analysis is a powerful tool that can be used to understand and predict many different types of data. In this book, we will focus on linear regression, as it is the most commonly used type of regression. We will also learn about some of the more advanced techniques that can be used for nonlinear data.


Classification is a method of categorizing data into groups. This can be done in a variety of ways, but the most common method is to use a set of predetermined categories. For example, data can be classified by sex (male or female), by race (white, black, Asian, etc.), by religion (Christian, Jew, Muslim), by political affiliation (Democrat, Republican, Libertarian), etc.

Classification is a powerful tool for understanding and making predictions about data. It is often used in machine learning and statistical inference. In machine learning, classification can be used to build models that predict the category of new data. In statistical inference, classification can be used to tests hypotheses about how data are distributed among different groups.

There are a few different types of classification:
-Binary classification: Data are divided into two groups. This is the most common type of classification.
-Multiclass classification: Data are divided into more than two groups.
-Ordinal classification: Data are divided into groups that are ordered from most to least similar.
-Multi-label classification: Data can belong to more than one group at the same time


Clustering is the task of grouping a set of objects in such a way that objects in the same group (called a cluster) are more similar (in some sense or another) to each other than to those in other groups (clusters).

There are many different algorithms for clustering, and no one algorithm works best on all data sets. In general, however, clustering algorithms can be classified into two broad categories:
-Hierarchical algorithms
-Partitioning algorithms

Hierarchical algorithms construct a hierarchy of clusters, where each node in the hierarchy represents a cluster. There are two main types of hierarchical algorithms: agglomerative and divisive. Agglomerative algorithms start with each object in its own cluster and then merge the clusters until only one cluster remains. Divisive algorithms start with all objects in one cluster and then divide the cluster into smaller pieces until each object is in its own cluster.

Partitioning algorithms create a partition of k clusters, where k is a user-specified parameter. They work by iteratively assigning objects to different clusters while simultaneously trying to minimize some criterion, such as the within-cluster sum of squares. K-means is one of the most popular partitioning algorithms.

Dimensionality Reduction

Reducing the number of dimensions in your data can be incredibly useful for a variety of reasons. Firstly, it can help to reduce the amount of noise in your data, which can in turn improve the accuracy of your machine learning models. Additionally, it can also help to speed up training times, as fewer dimensions means less data to process. Finally, it can also make it easier to visualise your data, as high-dimensional data can be difficult to plot.

There are a number of different techniques that can be used for dimensionality reduction, but one of the most popular is Principal Component Analysis (PCA). PCA works by finding the directions (or “principal components”) along which your data varies the most, and then projecting your data onto these directions. This results in a lower-dimensional representation of your data that retains as much variation as possible.

If you’re interested in learning more about dimensionality reduction, then I highly recommend “The 100 Page Machine Learning Book” by Andriy Burkov. This book provides a great overview of a variety of different dimensionality reduction techniques, and includes several practical examples to illustrate how they work.

Model Selection

One key question in machine learning is how to select the best model for a given task. This question is particularly important when we have a large number of models to choose from, as is often the case in deep learning. In this chapter, we will discuss several ways of model selection, including hold-out sets, cross-validation, and iterated k-fold cross-validation.

Ensemble Methods

Ensemble methods are a key part of successful machine learning. Ensemble methods combine the predictions of multiple models to produce better results than any individual model could.

There are many different ensemble methods, and the best method to use depends on the type of data and the task at hand. Some popular ensemble methods include bagging, boosting, and stacking.

Bagging is a method where multiple models are trained on different subsets of the data. The final predictions are then made by averaging the predictions of all the models. Bagging is often used with decision trees, as it can help to reduce the variance of the model.

Boosting is another popular ensemble method. In boosting, multiple models are trained sequentially, each model learning from the mistakes of the previous model. The final predictions are made by combine the predictions of all the models. Boosting is often used with weak learners, as it can help to reduce the bias of the model.

Stacking is an ensemble method where multiple models are trained on different subsets of the data, and then their predictions are combined using a second “meta-model”. The meta-model can be any machine learning model, but is often a simple linear regression or logistic regression.

Deep Learning

Deep learning is a subset of machine learning that is concerned with algorithms inspired by the structure and function of the brain. Also known as deep neural networks, these algorithms are designed to learn in a layered fashion, similar to the way that humans acquire knowledge. Deep learning is often used for image recognition and classification, voice recognition, and natural language processing.

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