FA-100095 / Preference pair construction / Member archive
Preference pairs: tied extrema are resolved by input order · case 05
tied extrema are resolved by input order.
Case contract
Rows are [prompt,id,score]. Emit [prompt,best_id,worst_id] only when max and min are each unique; a middle tie is allowed.
Why this case matters
A small deterministic preference-data transform makes pair semantics inspectable without a training framework.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| tied maximum skipped | [["p5", "a", "c"]] | [] | Failed |
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