FA-98378 / Token sampling filters / Member archive
Token sampling: Presence penalty scales with repeated history count · case 03
Presence penalty scales with repeated history count.
Case contract
Subtract penalty exactly once from each scored token appearing at least once in history; other scores are unchanged.
Why this case matters
A finite, deterministic token-selection contract isolates one decoding operation from model inference and runtime behavior.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| duplicate history | {"a": -1.0, "b": 2.0} | {"a": 3.5, "b": 2.0} | Failed |
MEMBER ARCHIVE
The complete case is available to members.
This record includes three runnable implementations, regression fixtures, execution results, and source hashes.
Member access is invitation-based. Sign in with your invited account to inspect the sources.
Sign in to the archive ↗