Question: In a concise analytical response, explain what you can and cannot conclude about choosing the size of a training-dev set from earlier validation-set advice.

Sample answer: You can usually carry over most of the earlier validation-set sizing advice when deciding the training-dev set size. But the guidance does not say every rule transfers unchanged, since it says only most of them do. So the training-dev set should generally be sized with the same broad principles, without assuming perfect one-to-one equivalence.

Key points:

• Earlier sizing advice for the validation set is the relevant starting point.
• Most of that advice also applies to the training-dev set.
• The guidance stops short of saying all rules apply.
• No new sizing formula is provided here.

Rubric: A strong response identifies the earlier validation-set guidance, explains that it mostly carries over to the training-dev set, and distinguishes partial from complete applicability without inventing extra rules.