Mutual point-winning probabilities (MPW): a new performance measure for table tennis     

Christophe Ley  Yves Dominicy  Wim Bruneel 《Journal of sports sciences》2018,36(23):2684-2690

ABSTRACT

We propose a new performance measure for table tennis players: the mutual point-winning probabilities (MPW) as server and receiver. The MPWs quantify a player’s chances to win a point against a given opponent, and hence nicely complement the classical match statistics history between two players. These new quantities are based on a Bradley-Terry-type statistical model taking into account the importance of individual points, since a rally at 8–2 in the first set is less crucial than a rally at the score of 9–9 in the final set. The MPWs hence reveal a player’s strength on his/her service against a given opponent as well as his/her capacity of scoring crucial points. We estimate the MPWs by means of maximum likelihood estimation and show via a Monte Carlo simulation study that our estimation procedure works well. In order to illustrate the MPWs’ versatile use, we have organized two round-robin tournaments of ten respectively eleven table tennis players from the Belgian table tennis federation. We compare the classical final ranking to the ranking based on MPWs, and we highlight how the MPWs shed new light on strengths and weaknesses of the players.  相似文献   

The use of head-to-head records for breaking ties in round-robin soccer contests     

Arvi Pakaslahti 《体育哲学杂志》2013,40(3):355-366

Head-to-head records are often used in round-robin contests for breaking ties between athletes or teams that are equal on points or wins. In this paper, I argue, on the one hand, that tie-breaking systems of round-robin soccer contests should give more importance to overall goal difference than to head-to-head records. On the other hand, I also argue that even the mere inclusion of head-to-head records in the tie-breaking criteria of a round-robin soccer contest is problematic.  相似文献   

增强循环制编排合理性的探索     

傅企明  赵成  刘继领 《中国体育科技》2007,43(2):136-139

从参赛者机会均等的角度出发,对传统的编排方法进行分析,指出其中存在“对阵轮空”机会不平等(奇数队)、“场地利用和主客身份安排”不平等等缺陷,进而提出了改进办法:用“右上角号码固定”代替“传统的左上角号码固定”,并在此基础上给出各种情况下的最终结果,以便在实践中直接参照使用。  相似文献   

Linux系统中进程调度策略     

葛君  郑凤婷 《商丘职业技术学院学报》2009,8(5):42-44

Linux是一个多用户多任务的操作系统.Linux中实现了对多个进程公平、高效的调度,并不是采用单一的调度策略,而是几种调度策略有机地综合应用.  相似文献