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Free Lessons (5)
Welcome to the Course
Course Expectations
Machine Learning Is Predictive Analytics
The Course Datasets
Quiz: Data Basics
Supervised Learning
What Is Machine Learning?
Forms of Supervised Learning
Why Decision Trees?
Decision Tree Intuition
Overfitting Intuition
Model Tuning Intuition
Quiz: Machine Learning Concepts
Classification Tree Math
Gini Impurity
Gini Change
Classification Tree Training Example
Many Categories Impurity
Numeric Feature Impurity
Quiz: Classification Tree Math
Using Classification Trees in R
Exploratory Data Analysis—Profiling
Exploratory Data Analysis: Visualization
Introducing tidymodels
Crafting the Recipe
Specify the Algorithm and Workflow
Fitting the Model
Quiz: Fitting Models
Introducing the Bias-Variance Tradeoff
Underfitting and Overfitting
The Bias-Variance Tradeoff
Quiz: Underfitting, Overfitting, and the Bias-Variance Tradeoff
Model Tuning
Cross-Validation
Model Tuning Intuition 201
Controlling Complexity
Pruning Classification Trees
Model Tuning with tidymodels
Measuring Model Accuracy
Performing Cross-Validation
Tuning a Classification Tree
Visualizing a Tuned Classification Tree
Quiz: Model Tuning
Feature Engineering
Feature Engineering Intuition
Information Leakage
Decision Boundaries
Engineering Features for Decision Trees
Missing Data
Quiz: Feature Engineering
Regression Trees
Regression Tree Basics
Numeric Feature SSE
Many Categories SSE
Regression Trees with tidymodels
Quiz: Regression Trees
The Random Forest Algorithm
Decision Trees and Ensembles
Bagging
Feature Randomization
Quiz: Random Forests
Using Random Forests
Random Forests with tidymodels
Feature Importance
Tuning Random Forests
Preparing the Test Dataset
Making Predictions
Testing the Titanic Dataset
Quiz: Using Random Forests
Gradient Boosting Trees
How Gradient Boosting Works
Gradient Boosting with XGBoost
Using XGBoost with tidymodels
Tuning XGBoost with tidymodels
Evaluating XGBoost with tidymodels
Quiz: XGBoost
Continuing Your Journey
What's Next?
Project
Credit Card Fraud Detection using the R Language
Data Science with R: Decision Trees and Random Forests
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Quiz: Data Basics
Quiz: Data Basics
Test what you’ve learned about the basics of machine learning.
We'll cover the following...
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