Câu 26: AWS Certified Machine Learning Engineer - Associate MLA-C01

A company wants to predict the success of advertising campaigns by considering the color scheme of each advertisement. An ML engineer is preparing data for a neural network model. The dataset includes color information as categorical data. Which technique for feature engineering should the ML engineer use for the model?

1. A. Apply label encoding to the color categories. Automatically assign each color a unique integer.
2. B. Implement padding to ensure that all color feature vectors have the same length.
3. C. Perform dimensionality reduction on the color categories.
4. D. One-hot encode the color categories to transform the color scheme feature into a binary matrix. — đáp án hiện tại