Skip to main content
QUICK REVIEW

[论文解读] Reducing the Incentive to Tank: The Ex Post Gold Plan

Bret J. Benesh|arXiv (Cornell University)|Mar 20, 2026
Auction Theory and Applications被引用 0
一句话总结

该论文提出“事后黄金计划”(Ex Post Gold Plan),其基于 REWIND(Realized Elimination Wins Determinant)机制,使用事后淘汰赛日期来决定胜利何时计入抽签位置,从而削弱在大部分赛季中的摆烂激励,同时促进竞争性努力。

ABSTRACT

Many recent proposals for reducing tanking in draft lotteries share a common structure: losses improve draft position early in the season while wins improve draft position later. While such systems improve late-season incentives, they retain a predictable pivot point that tanking teams can exploit strategically. This paper proposes a simple modification that introduces uncertainty into the timing of the incentive switch. The proposed metric, the \emph{Realized Elimination Wins Determinant} (REWIND), ranks teams according to the number of wins obtained after their ex post elimination date, which makes this a variation of the Gold Plan. Because the ex post elimination date cannot be known with certainty during the season, the mechanism weakens incentives for strategic losing while preserving incentives for competitive effort after elimination. Moreover, the ex post elimination date is typically earlier than other proposed pivot points, so there is a longer period where a tanking team's best strategy is to win. The Ex Post Gold plan uses the REWIND metric to create a simple system where every team will be incentivized to win at least half of their games in most seasons.

研究动机与目标

  • 动机:通过使激励调整时点不确定来减少选秀抽签中的策略性摆烂。
  • 提议:用事后淘汰日期替代固定支点日期,以威慑提前失利。
  • 目标:建立一个简单、易懂的机制,通常激励球队赢得至少一半的比赛。

提出的方法

  • 为每支球队 i 定义 REWIND 为其 REWIND 日期 Ti 之后的胜场数。
  • 将 Ti 计算为球队 i 失去 Li+1 场比赛的日期,其中 Li 是该赛季结束时其所在联盟第六种子的失利场次。
  • 定义 Wi 为赛季总胜场,Ri 为到 Ti 为止的胜场数;REWIND 得分 = Wi − Ri。
  • 使用 REWIND 得分来确定抽签排序,将支点与事后淘汰绑定,而非固定的全赛季日期。

实验结果

研究问题

  • RQ1将抽签激励时点与事后淘汰日期绑定,与固定支点方案相比,会如何影响摆烂激励?
  • RQ2事后黄金计划是否鼓励球队在整个赛季中更稳定地取胜,在信息不完全的情境下表现如何?
  • RQ3在职业联赛中实施基于 REWIND 的抽签规则的实际优点与缺点是什么?

主要发现

  • 事后黄金计划通过以事后淘汰日期作为支点,延长了激励球队取胜的时期。
  • Ti 的事后性质使球队很难明确知道何时的输赢会有帮助,削弱了摆烂策略。
  • 在典型赛季中,事后黄金计划鼓励球队至少赢得一半的比赛,平衡了整个赛季的激励。

更好的研究,从现在开始

从论文设计到论文写作,大幅缩短您的研究时间。

无需绑定信用卡

本解读由 AI 生成,并经人工编辑审核。