FA-100060 / Preference pair construction / Member archive

Preference pairs: responses from different prompts are compared · case 05

responses from different prompts are compared.

Member previewVariant 5 · 3 implementations · 6 checks per implementation

Case contract

Rows are [prompt,id,score]. For each prompt with at least two rows, return [prompt,max_id,min_id] in first-seen prompt order; ties break by lexical ID.

Why this case matters

A small deterministic preference-data transform makes pair semantics inspectable without a training framework.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
separate prompts	`[["q5", "x", "b"]]`	`[["p5", "a", "b"], ["q5", "x", "y"]]`	Failed

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