美国国家橄榄球联盟(National Football League)通过插入球员垫肩和足球内部的射频识别标签,追踪运动员在每场比赛中的动作和位置。通过分析2022赛季前九周的跟踪数据(这些数据将在2024年美国国家橄榄球联盟大数据碗比赛中提供),Nguyen和他的同事们旨在为铲球提供更准确的指标。特别是,该数据集包含了超过5500个跑卫的比赛,每个比赛的几帧都标有描述。对于标记为第一次接触或铲球的事件,球队确定了防守球员靠近对方跑卫的接触窗口。对于每个接触窗口,他们计算了第一帧和最后一帧之间持球者速度的变化,并将其均匀分布在每一帧之间。然后,在各自的接触窗口中,每个帧级值被所有防守球员平等地共享。最后,分数铲球总结了给定防守者接触窗口的所有帧的贡献。
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