| In order to study the technical and tactical decision-making process of high-level athletes in fierce confrontation,This paper presents a new analytical tool: "the “3+2" forest of technical spatial decision making".The purpose of this tool is to study the path dependence of the decision-making process of badminton singles players’ techniques and tactics after 5 beats.The advantage of this tool is: 1,which can be used.A quantitative analysis of the process of the final five shots of each round of high-level badminton is made,the node of which,in addition to the techniques involved,There are also batting lines,which can realize 3D statistical analysis of techniques and tactics.Its tree structure accords with the nature of motion decision making of netting confrontations,and it can easily find the path dependence phenomenon of technical and tactical decisions.Therefore,it can help us find a way to overcome the enemy.It conforms to the cognitive habits of mankind,and it can visualize the process of technical and tactical decision-making and path dependence to sports workers,which greatly facilitates athletes have the Communication between coaches and sports researchers.Based on the research of Chen long,a world elite badminton male singles player,and Ma Lin,a world elite badminton female singles player,this paper analyzes the technical decisions of Chen long and Ma Lin in the competition by analyzing their four high-level competitions.The spatial and tactical decisions are analyzed.The results show that:1,Chen long’s score "3+2" against the top players in the technical decision forest: from the technical and spatial decision forest,only the Axelson game there is a technical and batting line dependence.From the tactical decision-making forest,Only against Axelson there was a path-dependent situation and an "advantage path".(2)Chen long made a mistake of "3+2" in the technical space decision forest: from the technology decision forest,there was no path dependence.From the spatial and tactical decision forest,Chen long against Axelson had a path-dependent approach to the batting line and tactical use,and five "inferior paths" of error.(3)Marin scored "3+2" against the top players in the technological space decision-making forest: from the technical decision forest perspective,Marin against the four top players had the situation of technological path dependence;from the spatial and tactical decision forest point of view,Against Inthanon,Marin had a path dependence on the batting line and tactical use,and a "superior path" for scoring.(4)in the forest of "3+2" technical space decision making by Marin against the top players,only the path dependence of technology,space route and tactics appeared in the match between Marin and Inthanon,and the "inferior path" of error appeared. |
