Pith Number

pith:4N7ABM2U

pith:2026:4N7ABM2UUZYZF3F36EJNP5OP3X

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Robust Sequential Experimental Design for A/B Testing

Chengchun Shi, Hongtu Zhu, Niansheng Tang, Qianglin Wen, Ting Li, Xiangkun Wu, Yingying Zhang

Robust sequential experimental design bounds the worst-case mean squared error of estimated treatment effects in A/B testing under model misspecification.

arxiv:2605.12899 v1 · 2026-05-13 · stat.ML · cs.LG

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4 Citations open

5 Replications open

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The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

Theoretically, we prove that our design bounds the worst-case mean squared error of the estimated treatment effect.

C2weakest assumption

The unified framework assumes that model misspecification can be controlled within a single design that covers both contextual bandit and dynamic settings, but the abstract provides no details on the precise class of misspecification or the conditions required for the bound to hold.

C3one line summary

A unified robust framework for sequential A/B testing bounds the worst-case mean squared error of treatment effect estimates under model misspecification in both contextual bandit and dynamic regimes.

References

25 extracted · 25 resolved · 1 Pith anchors

[1] doi: 10.1093/jrsssb/qkad072. Atkinson, A. C. Optimum biased coin designs for sequential clinical trials with prognostic factors.Biometrika, 69(1): 61–67, · doi:10.1093/jrsssb/qkad072

[2] arXiv preprint arXiv:2112.13495 , year=

[3] URL https: //doi.org/10.1287/mnsc.2019.3424 2019 · doi:10.1287/mnsc.2019.3424

[4] Budgeted active experimen- tation for treatment effect estimation from observational and randomized data.arXiv preprint arXiv:2602.22021,

[5] Detecting interference in A/B testing with increasing allocation.arXiv preprint arXiv:2211.03262,

Receipt and verification

First computed	2026-05-18T03:09:10.766621Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e37e00b354a67192ecbbf112d7f5cfddec09f483c9ddfb6999752e88d6ca355f

Aliases

arxiv: 2605.12899 · arxiv_version: 2605.12899v1 · doi: 10.48550/arxiv.2605.12899 · pith_short_12: 4N7ABM2UUZYZ · pith_short_16: 4N7ABM2UUZYZF3F3 · pith_short_8: 4N7ABM2U

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/4N7ABM2UUZYZF3F36EJNP5OP3X \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: e37e00b354a67192ecbbf112d7f5cfddec09f483c9ddfb6999752e88d6ca355f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac7f3abda1c207275f824ce485f77e876d5ba85470924061ab5c3b6f26205530",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2026-05-13T02:24:57Z",
    "title_canon_sha256": "7346a51bd392f998a0063714cadaeae5b23ff6c39a3e59ea82cfeb86b831ca80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.12899",
    "kind": "arxiv",
    "version": 1
  }
}