Grokking Machine Learning

9 Splitting data by asking questions: Decision trees

In this chapter

• what is a decision tree
• using decision trees for classification and regression
• building an app-recommendation system using users’ information
• accuracy, Gini index, and entropy, and their role in building decision trees
• using Scikit-Learn to train a decision tree on a university admissions dataset

In this chapter, we cover decision trees. Decision trees are powerful classification and regression models, which also give us a great deal of information about our dataset. Just like the previous models we’ve learned in this book, decision trees are trained with labeled data, where ...