FA-100047 / Preference pair construction / Member archive
Preference pairs: equal ratings produce an oriented pair · case 02
equal ratings produce an oriented pair.
Case contract
Each record is [left_text,right_text,left_rating,right_rating]. Return [chosen,rejected] only for strict wins; ties produce None.
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 |
|---|---|---|---|
| nonzero tie | [["L", "R"]] | [null] | Failed |
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