| # Reproduction verification |
|
|
| Verified on 21 October 2026 by fitting the released annotations again on CPU. |
| All **31 judge/protocol comparisons pass**, with absolute tolerance `1e-5` |
| and zero relative tolerance. The largest absolute difference across checked |
| numeric outputs is **1.137e-12**. |
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|
| | Suite | Judges | Compared with the archive | |
| | --- | ---: | --- | |
| | LMArena 100K main | 8 | All held-out ratings, human reference ratings and fitted temperatures | |
| | Constant smoothing | 8 | MAE for five constants, Hard-Elo and pooled-temperature Soft-Elo | |
| | Historical conformal | 8 | Ratings, judge/human bootstrap standard errors and all five split outcomes | |
| | LMArena 140K main | 7 | Per-judge summary statistics | |
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|
| The machine-readable [validation report](verification/validation.json) records |
| individual checks, input and reference hashes, and run identifiers. |
| The [fresh summaries](verification/summary.csv) contain the newly computed metrics. |
| Smoothing and LMArena140K comparisons are limited to the archived statistics; |
| original model-level references were not saved for those analyses. |
|
|
| ## Correction found by the audit |
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|
| The first full run passed the main, smoothing and LMArena140K comparisons but |
| failed the eight historical conformal comparisons. The release code had held |
| Hard-Elo anchors fixed during bootstrapping. The original implementation |
| resampled those anchor battles for Hard-Elo and held them fixed for Soft-Elo. |
| Restoring this setting and rerunning all eight judges reproduced the archive. |
| No archived result was changed to obtain a match. |
|
|
| The historical conformal suite retains the original pooled temperature, |
| 20 bootstrap resamples, five splits, seed 42 and higher-interpolation quantile. |
| The split-width ranges are the 2.5th and 97.5th percentiles. This command |
| reproduces the original calculation; its quantile differs from the direct |
| conformal order-statistic rule. |
|
|
| ## Environment and additional checks |
|
|
| The fresh full runs used Python 3.13.11 with the committed dependency lock: |
| NumPy 2.2.6, pandas 2.3.3, SciPy 1.17.1 and scikit-learn 1.8.0. |
| The documented Python 3.12 environment was separately installed and checked. |
| Fifteen unit tests pass. The loading example was checked against both a local |
| release and Hugging Face, and its CSV output was loaded by the original demo. |
| An installed wheel includes all seven LMArena140K reference files. |
| The numerical function bodies in the public package were checked against the |
| code used in the recorded runs. |
|
|
| Earlier release validation checked all 368,777 exported rows, their checksums, |
| source IDs, model pairs, human labels and subset membership. The reproduction |
| uses each judge's valid annotations, rather than the cross-judge intersection. |
| Input annotations match dataset revision |
| `6223cb4116d76a1bae376c0730df4d968d7172be`. |
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|
| Run records: |
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| - `c1406b29-1181-4627-9c6e-61e1d6790765`: all 23 non-conformal comparisons passed; |
| the eight initial conformal mismatches caused the run to exit with an error. |
| - `f3dcd6c1-a910-4b5c-b25e-fd20a8616848`: all eight corrected conformal comparisons passed. |
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|
| This verifies the four suites above. It does not rerun judge inference, |
| auxiliary prompt experiments, the human re-annotation study or every appendix figure. |
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