luxury-lakehouse/obso-trained-grids

OBSO模型通过结合三个组件来评估无球得分机会：1. 可达性——基于观察到的接球模式，球传到给定区域被接球方控制的概率。2. 预期控球价值（EPV）——通过转换和射门频率的价值迭代估计，在给定区域控球导致进球的概率。3. 传球完成概率——基于观察到的传球结果估计，从一个区域到另一个区域的传球被完成的概率。这些网格是从事件数据中预先计算出来的，作为实时OBSO流水线的静态输入，与动态场地控制表面结合使用。The OBSO model evaluates off-ball scoring opportunities by combining three components: 1. Reachability — the probability that a ball played to a given zone can be controlled by the receiving team, based on observed reception patterns. 2. Expected Possession Value (EPV) — the probability that a possession in a given zone will result in a goal, estimated via value iteration over transition and shot frequencies. 3. Pass Completion Probability — the likelihood that a pass from one zone to another is completed, estimated from observed pass outcomes. These grids are pre-computed from event data and serve as static inputs to the real-time OBSO pipeline, which combines them with dynamic pitch control surfaces.