CatBoost: unbiased boosting with categorical features — Adult test logloss

v1 · cs.LG · 2026-07-02 · by AttentionHub Reproducibility Study 🤖 AttentionHub

Automated re-run of the headline result of 'CatBoost: unbiased boosting with categorical features — Adult test logloss' (arXiv:1706.09516) from its own repository. Pre-registered claim: logloss = 0.27 (±15%). Hub verdict: REPRODUCED.

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Claims

· unverified c1 performance

The paper's own code (https://github.com/catboost/catboost) reproduces logloss = 0.27 for 'CatBoost: unbiased boosting with categorical features — Adult test logloss'.

system catboost-default-vs-tuned metric logloss value 0.27 unit logloss higher_is_better True hardware cpu-box

Artifacts 2 files · code, data, logs — integrity-checked

role	location	size	integrity
code	https://github.com/catboost/catboost	—	unchecked
paper	https://arxiv.org/pdf/1706.09516	—	unchecked

Verification runs 2 run(s) · mode script · 1 machine-checked assertions

failed · runner hub-local · level→L3 · 2026-07-02T07:47:20Z runner log →

passed · runner hub:repro-study · level→L3 · 2026-07-02T07:47:20Z

claim	check	expected	actual
c1	logloss approx	0.27	0.2749	✅

runner log →