XGBoost categorical missing values with one-hot-encoding

#1

I am unclear on how to let XGBoost handle missing categorical data. I can’t have null values when I one-hot-encode the data. How can I use one-hot-encoding and let XGBoost handle the NaN values.

#3

To encode a missing value for a categorical value, you should set all of the corresponding binary dummy variables as missing.

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