Seung Jin Cho, Jun Yeong Lee · 2026 · arXiv (Cornell University)
DOI: 10.48550/arxiv.2610.27576 · cited by 0 works (OpenAlex) · open-access PDF
在2024年,韩国棒球组织成为第一个替代主板球打击判决的自动化系统的顶级联盟。从2021年到2026年使用超过一百万个球场,我们将改变分开,以消除人类的判断力,并施加新的区域几何。机器消除了依赖计数的呼叫,捕手框架的价值和星球打击的微小优势,租金仅值每位球员每季度几次运行。由于机器以高度进行区块化,并对每场比赛进行同样的处理,它重新分配了对高球场和跨球场的打击,但很少有球场暴露于这些变化,并且它们对板板外观的效果是准确估计和接近零的。
Machine translation (Meta M2M100); the English original follows.
In 2024 the Korea Baseball Organization became the first top-tier league to replace the home-plate umpires ball-strike judgment with an automated system. Using over a million pitches from 2021 to 2026, we separate the change into the removal of human discretion and the imposition of a new zone geometry. The machine eliminated count-dependent calls, the value of catcher framing and a small advantage for star batters, rents worth only a few runs per player-season. Because the machines zone scales with height and treats every matchup alike, it redistributed strikes toward tall batters and across matchups, but few pitches are exposed to these changes, and their effects on plate-appearance outcomes are precisely estimated and close to zero. Pitchers re-optimized quickly by throwing higher, with left-handers catching up to an existing trend, whereas we find no evidence that batters adjusted. The results suggest that the incidence of replacing human judgment with a rule depends on its geometry and on exposure.
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Topics: League, Economics, Discretion, Computer science, Throwing, Boom
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