A historic brick-kiln’s 2 percent defect class needs more presence…

Question

A historic brick-kiln’s 2 percent defect class needs more presence in the training slice. Which official strategy should they apply, and where?

Accepted Answer

Resample on the training slice only: oversample the minority, undersample the majority, or a controlled mix. — Think of a 2 percent kiln defect class that needs more presence in training. Resample the training slice only: oversample the minority, undersample the majority, or a controlled mix. Do not resample the holdout so it no longer matches production.

Answer

Resample the validation and test slices too, so holdout rates no longer match production.

Answer

Ignore the 2 percent class, because accuracy on a constant-pass model is enough.

Answer

Amazon Polly, because speech is a resampling method.

A historic brick-kiln’s 2 percent defect class needs more presence in the training slice. Which official strategy should they apply, and where?

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