In soccer (or association football), players quickly go from heroes to zeroes, or vice-versa. Performance is not a static measure but a somewhat volatile one. Analyzing performance as a time series rather than a stationary point in time is crucial to making better decisions. This paper introduces and explores I-VAEP and O-VAEP models to evaluate actions and rate players' intention and execution. Then, we analyze these ratings over time and propose use cases to fundament our option of treating player ratings as a continuous problem. As a result, we present who were the best players and how their performance evolved, define volatility metrics to measure a player's consistency, and build a player development curve to assist decision-making.

翻译：在足球(或协会足球)中,球员会很快从英雄到零,或相反,球员会迅速从英雄到零。业绩不是静态的衡量标准,而是某种程度的波动性。将表现分析成一个时间序列而不是一个固定的时间点,对于做出更好的决定至关重要。本文介绍和探讨I-VAEP和O-VAEP模型,以评价行动以及球员的意向和执行。然后,我们对这些评级进行长期分析,并提议用案例来资助我们将球员评级视为一个持续问题的选择。结果,我们介绍了谁是最佳球员,他们的表现如何演变,定义了衡量球员一致性的波动度量度,并构建了有助于决策的玩家发展曲线。