论文标题
关于足球中的主导空间的物理驱动的研究
A physics-driven study of dominance space in soccer
论文作者
论文摘要
在ARXIV中:2107.05714从理论的角度仔细研究了Voronoi图的概念。然后,引入了一种物理驱动的运动学方法,以生成足球中的优势空间的改进模型。仍然忠于确定性方法,我们通过(a)引入(a)参与者在其周围地区的不对称影响,(b)摩擦力对玩家运动的不对称影响,以及(c)这两种效果的同时组合。不对称影响相当直观。玩家比其他任何方向都可以控制自己的方向。他们必须做出的更大的转弯才能达到球场上的一点点,他们对这一点的控制越弱。根据简单的运动学定律,可以明确量化此效果。对于摩擦力,一部分来自空气阻力,因此与玩家速度的正方形成正比,从流体动力学中众所周知。没有其他外部摩擦力,但是,根据生物动物的建议,内部摩擦力与肌肉消耗能量有关,这与玩家的速度成正比。 尽管这些添加是直观地理解的,但在数学上,它们引入了许多分析复杂性。我们通过引入一些合理的简化假设来建立音调主导地位的确切分析解决方案。鉴于这些解决方案,Metrica Sports为公开可用的数据绘制了新的Voronoi图。通常,主要地区不再需要凸出,它们可能包含孔,并且可能被断开。最快的球员可能会在远离其余球员的远处占主导地位。
In arXiv:2107.05714 the concept of the Voronoi diagram was investigated closely from a theoretical point of view. Then, a physics-driven kinematical method was introduced to produce an improved model for dominance space in soccer. Remaining faithful to the deterministic approach, we extend the original work by the introduction of (a) an asymmetric influence of the players in their surrounding area, (b) the frictional forces to the players' motion, and (c) the simultaneous combination of both effects. The asymmetric influence is fairly intuitive; players have more control in the direction they are running than any other direction. The sharper the turn they must make to reach a point on the pitch, the weaker their control of that point will be. From simple kinematical laws, this effect can be quantified explicitly. For the frictional force, a portion comes from air resistance, and so will be proportional to the square of the player's speed, as is well known from fluid dynamics. There are no other external frictional forces, but, at the suggestion of biokinematics, there is an internal frictional force, relating to the consumption of energy by the muscles, which is proportional to the player's speed. Although these additions are intuitively understood, mathematically they introduce many analytical complexities. We establish exact analytical solutions of the dominance areas of the pitch by introducing a few reasonable simplifying assumptions. Given these solutions the new Voronoi diagrams are drawn for the publicly available data by Metrica Sports. In general, it is not necessary anymore for the dominance regions to be convex, they might contain holes, and may be disconnected. The fastest player may dominate points far away from the rest of the players.