| Dance Sports,also known as the "international standard dance",has experienced the stages of primitive dance,folk dance,court dance,social dance,new and old national dance.Now it’s one of the most popular sports in the world.The earliest dance is not restricted by any rules.With the development of dance and the emergence of competitions,rules have been gradually added to make the project develop better.The establishment of World Dance Sport Federation(WDSF)and the revision of the 21 scoring rules have made great progress in the development of sports dance competition.In the world,the subjective problem of sports dance has been striving for objective development,but sports dance is artistic and skillful.Competition evaluation can not achieve complete objectivity.The subjective problem makes the contestant and the referee have the space of performance and the imagination space in the competition,and form the game relationship.This is one of the charms of the current sports dance competition,and it is also the source of the development of sports dance.According to the revised WDSF 21 scoring rules,combined with the theoretical research methods of game theory and system theory,using the method of literature,expert survey method,comparative analysis,video observation,mathematical statistics and other research methods,to participate in the use of 2.1 evaluation scoring rules of international referees and experts participated in the selection 21 contestants scoring rules of expert level expansion of coaches,sports dance competition related grey game problem.The following are the results of this study.1,technical indicators,skills,dance and art indicators,non-verbal communication,atmosphere,selection and site use four scoring indicators in referee and contestants in the two way grey game area,and Latin dance and standard dance two dance system in the gray game area index is the same.2,the grey game index of contestants is less than that of the referee grey game index,and the performance of the players is grey.The judges also judge the grey game characteristics of the game.3,Latin dance’s technical indicators,such as dynamic change,synergistic separation,body communication,over balance,space use,art index,music structure and composition structure index are only judged by the referee in the one way grey game area.4,standard dance’s technical index driving action,body movement,mobile preparation,body communication,over balance,artistic index,music structure,composition structure and other indicators are only judged by the referee in the one way grey game area.5.When the music struccture and the combination structure constitute the two indexes in the same feld,the judges judge the grey degree most. |