Fit a full PCA on the preprocessed features and return the first three explaine…
Machine Learning · from Dimensionality reduction
PCAexplained_variance_ratio_components_scalingwhen not to use itPutting the kettle on…
Starting up…
Exercise 1
Fit a full PCA on the preprocessed features and return the first three explained-variance ratios, rounded to 4 places.
your answer
stuck? the lesson behind it
Dimensionality reduction
PCA costs us 0.07 AUC — because it has never seen the target