ML crash course - Categorical data
Machine learning crash course 중 Categorical data 챕터
developers.google.com/machine-learning/crash-course/categorical-data
Introduction
Numbers can also be categorical data
Encoding
Vocabulary and one-hot encoding
Index numbers
One-hot encoding
Outliers in categorical data
Encoding high-dimensional categorical features
Common issues
Human raters
Machine raters
High dimensionality
Feature crosses
When to use feature crosses
Feature cross exercises
https://developers.google.com/machine-learning/crash-course/categorical-data/feature-cross-exercises