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  1. What Open-World Games Teach Us About Testing Unpredictable Software

    Article • July 2026, ACM (Association for Computing Machinery)

    Norihiro Yoshida, Yusaku Kato

  2. An Empirical Study of the Error Characteristics in an Online Judge System

    Article • June 2025, ACM (Association for Computing Machinery)

    Norihiro Yoshida