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cs.HC2026
When the Strike Zone Becomes Algorithmic: Umpire Judgment and Player Challenge Decisions under AI Review
Kichang Lee, Gyeongmin Han, Sungmin Lee +1
The Automated Ball-Strike challenge system that Major League Baseball adopted in 2026 offers a distinctive setting for studying human AI interaction in which umpires make every bal…
cs.HC2026
Auditing Contextual Bias in Human Ball-Strike Calls Using KBO's Automated Umpiring Transition
Kichang Lee, JeongGil Ko
This paper uses the Korean Baseball Organization's adoption of the Automated Ball-Strike (ABS) system to audit long-standing claims about contextual bias in human ball-strike calls…
cs.HC2024★ 2 cited
Analyzing the Impact of the Automatic Ball Strike System in Professional Baseball through a Case Study on KBO League Data
Kichang Lee, Kyungsik Han, JeongGil Ko
Recent advancements in professional baseball have led to the introduction of the Automated Ball-Strike (ABS) system, or ``robot umpires,'' which utilize machine learning, computer…