Câu 12: Databricks Certified Machine Learning Associate

A machine learning engineer is trying to scale a machine learning pipeline by distributing its feature engineering process. Which of the following feature engineering tasks will be the least efficient to distribute?

1. A. One-hot encoding categorical features
2. B. Target encoding categorical features
3. C. Imputing missing feature values with the mean
4. D. Imputing missing feature values with the true median — đáp án hiện tại
5. E. Creating binary indicator features for missing values