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AIF-C01Domain 2: Fundamentals of Generative AIGenerative AI ConceptsmediumSingle choice

A prompt is generating repetitive, predictable text. Which inference parameter samples only from the smallest set of tokens covering a cumulative probability mass — adding controlled diversity?

A.top-p (nucleus sampling)

Probability-mass sampling = top-p. Correct.

B.max_tokens

max_tokens limits output length — not diversity.

C.stop_sequences

Stop sequences end generation — unrelated to token diversity.

D.model weight decay

Weight decay is a TRAINING regularizer — not an inference param.

Why this answer

top-p (nucleus sampling) restricts token selection to the smallest pool whose cumulative probability exceeds p — a dynamic cutoff that adapts diversity. temperature scales randomness; top-k is a fixed count; max_tokens/stop_sequences control length.

Correct answer: A · Last reviewed 2026-11-05

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