基于属性重要性的乒乓球比赛技术诊断

Technical Diagnosis of Table Tennis Matches Based on Importance of Attribute

选取发球、正手弧圈(快攻)、反手弧圈(快攻)、挑打、劈长、摆短、推(挡)等技术的得分率和使用率指标,运用粗糙集属性重要性方法,通过计算各项指标的权重,对国外优秀乒乓球运动员的技术特征进行分析。结果表明:正手弧圈技术是所有外国优秀乒乓球运动员的主要得分手段;波尔的反手弧圈技术是其重要的得分手段之一;柳承敏的正手挑打技术得分率较高;萨姆索洛夫的反手攻防技术占较大的权重。

Selecting the point average and utilization rate indexes of such techniques as service, forehand loop （fast attack ）, backhand loop （fast attack）, flip, chopping shot, short shot, push （block） etc. , using a method of attribute importance of rough set and computing the weight of all indexes, it made an analysis of the technical characteristics of foreign top-notch table tennis players. The results show that forehand loop technique is a main scoring means of foreign table tennis elite; Boll＇ s backhand loop technique is his one of main measures of scoring a point; Ryu＇s forehand flip technique has higher point average; Samosonov＇s backhand offense and defense has a larger proportion in his techniques.