FA-100087 / Preference pair construction / Member archive
Preference pairs: only adjacent candidates are paired · case 02
only adjacent candidates are paired.
Case contract
Candidates are [id,score]. Return every unordered pair [higher_id,lower_id] once; tied scores are skipped. Order follows input index pairs.
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 |
|---|---|---|---|
| nonadjacent pair | [["a2", "b2"]] | [["a2", "b2"], ["a2", "c2"], ["c2", "b2"]] | Failed |
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