乒乓球视频战术分析的C4.5算法精度优化

Precision Optimization of the C4.5 Algorithm on Analysis of Table Tennis Video Tactics

基于传统C4.5算法还存在精度不高、速度不快等问题,本文针对乒乓球视频战术分析对传统C4.5算法进行优化,并且在此基础上,构建一个有关乒乓球视频战术的模型。此类模型不但可以运用信息增加效益,还可以将关联规则作为辅助条件,针对实验研究所得的技术进行质量评价,并对其候选属性进行优化,而且通过Jaccard系数(计算样本相似性与分散性的一个概率)优化乒乓球视频离散集合,减少数据产生的重复误差。为进一步改进C4.5算法的精度优化对乒乓球视频战术分析产生的效果,本文设计了一个仿真实验,在此实验中发现,与传统C4.5算法相比,优化后的C4.5算法的精度在击球力度、击球手法、旋转角度上都要高出许多。

According to traditional C4.5 algorithm has low accuracy, low speed etc., , we optimize the traditional C4.5 algorithm based on table tennis video tactical analysis, and on this basis, build a model about table tennis video tactics. Using information, such a model can not only increase efficiency, can also make association rules as subsidiary conditions, quality evaluate the obtained technology of the experimental research, and to optimize its candidate attribute, and through the Jaccard coefficient (a probability of computing samples’similarity and dispersion) to optimize table tennis video discrete collection, reduce repetitive error produced by the data. In order to further improve the effect of the analysis of table tennis tactical videos by precision optimization of the C4.5 algorithm, we designed a simulation experiment, seen from experiment, compared with the traditional C4.5 algorithm, the precision of the optimized C4.5 algorithm are much higher on the technique of shot and hit the ball, rotating angle.