The factory has too few off-spec batches, so it adds rotated stills, a few synthetic off-spec rows, and some deliberately noisy frames so the later model is less brittle. Which data-prep activities are those?
Select an answer to reveal the explanation.
Short Explanation
Too few off-spec batches, so add rotated stills, a few synthetic off-spec rows, and some deliberately noisy frames. Those are augmentation, synthetic data, and adversarial-example inclusion: prep choices that enlarge or toughen the set. They are not Chapter 6 adversarial testing.
Full Explanation
Augmentation, synthetic rows, and included adversarial examples are data-prep activities. They are not Chapter 6 test techniques, not feature selection, and not forbidden in preprocessing.