Momentum as elaborated under a recent novel definition has been shown quantitatively to have a significant impact on basketball game outcomes. This paper makes two contributions to the analytical literature on sports momentum: (1) two aspects of the new definition are operationalized so that its practicality becomes evident; and (2) through a dimension-reduction technique (elastic net), key factors associated with momentum are identified. Both technical variables such as field goals, assists, rebounds, etc. and environmental variables such as the spectator attendance rate and player salary dispersion are considered, and the potential for useful real-time analyzes is illustrated.

根据最近的新定义阐述的动量已在数量上显示对篮球比赛结果有重大影响。本文对有关体育动量的分析文献做出了两个贡献：（1）新定义的两个方面被实施，使其实用性变得明显；(2) 通过降维技术（弹性网），确定与动量相关的关键因素。既考虑了投篮命中率、助攻、篮板等技术变量，也考虑了观众上座率和球员工资分布等环境变量，并说明了有用的实时分析的潜力。