Papers › RiLACS: Risk-Limiting Audits via Confidence Sequences

RiLACS: Risk-Limiting Audits via Confidence Sequences

23 Jul 2021arXiv:2107.11323links table onlyarchive 2025-07-28

Ian Waudby-Smith, Philip B. Stark, Aaditya Ramdas

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Accurately determining the outcome of an election is a complex task with many potential sources of error, ranging from software glitches in voting machines to procedural lapses to outright fraud. Risk-limiting audits (RLA) are statistically principled "incremental" hand counts that provide statistical assurance that reported outcomes accurately reflect the validly cast votes. We present a suite of tools for conducting RLAs using confidence sequences -- sequences of confidence sets which uniformly capture an electoral parameter of interest from the start of an audit to the point of an exhaustive recount with high probability. Adopting the SHANGRLA framework, we design nonnegative martingales which yield computationally and statistically efficient confidence sequences and RLAs for a wide variety of election types.

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WannabeSmith/RiLACS officialmentioned in papermentioned on GitHubBSD-3-Clause report

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apriori_Kelly_bet WannabeSmith/RiLACS/rilacs/strategies.py official repository unverified BSD-3-Clause (permissive) · 33343870cf5bc450 · report
apriori_Kelly_bet_general WannabeSmith/RiLACS/rilacs/strategies.py official repository unverified BSD-3-Clause (permissive) · 83bc46d1ec8c4f0a · report
bravo WannabeSmith/RiLACS/rilacs/misc.py official repository unverified BSD-3-Clause (permissive) · 5ce191c940df5f59 · report
get_bravo_workload WannabeSmith/RiLACS/rilacs/misc.py official repository unverified BSD-3-Clause (permissive) · f36a23ce430c5bc7 · report
get_workload_from_mart WannabeSmith/RiLACS/rilacs/misc.py official repository unverified BSD-3-Clause (permissive) · aac1dedbac1e8b2f · report
linear_gamma_dist WannabeSmith/RiLACS/rilacs/strategies.py official repository unverified BSD-3-Clause (permissive) · 215ec53c83c3885c · report
lower_cs_from_audit WannabeSmith/RiLACS/rilacs/incremental_audit.py official repository unverified BSD-3-Clause (permissive) · 63161fb5cd16a863 · report
unzip WannabeSmith/RiLACS/canada_audit/map.py official repository unverified BSD-3-Clause (permissive) · 70b3f235fc943a61 · report

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