Research On Comprehensive Evaluation Of Attack And Defense Strength Of 2018 Fooball World Cup Based On TOPSIS-RSR

This paper exploring the defensive and offensive strength of 16 teams in the 2018 World Cup in Russia,is to understand the latest trends in world football,find out the factors that lead to differences in the strength of offense and defense of different teams.Understanding the advantage and weaknesses of the offensive and defensive of the16 teams,the advantages of the 16 teams can be learn for other teams in the training process.At the same time,other teams should combine with its own actual situation to make a training plan whether it suits its own situation.the methods of literature,mathematical statistics and other methods,TOPSIS-RSR is used to sort and rank the offensive and defensive strength of the top 16 teams participating in the knockout in the2018 World Cup in Russia,in order that makes comprehensive evaluation on defensive and offensive strength of 16 teams in the 2018 World Cup in Russia.Result:(1)Among the 16 teams in the 2018 World Cup,there are 6 teams tending to play defensive counterattack and 10 teams tending to play control.The proportion of teams on all Continent teams is: European teams account for 63%;American teams account for 25%;Central American,Caribbean and Asian teams account for 6%;no African teams.(2)According to the single factor analysis of variance,there are significant differences in terms of the average age of the first eleven players and the forwards' average age,the average age,the average weight and the average Quetelet Index.Through multiple comparative analysis,there are significant differences in terms of the the average age,the average weight and the average Quetelet Index.(3)In terms of offensive and defensive strength,there are 4 teams with Ci of offensive and defensive above 0.4329,8 teams with Ci of offensive and defensive between 0.3423 and 0.4329,and 4 teams with Ci of offensive and defensive under 0.3423.(4)Classification standards: Ci of offensive and defensive above 0.4329 is the first rank;Ci of offensive and defensive between 0.3423 and 0.4329 is the second rank;Ci of offensive and defensive under 0.3423 is the third rank.(5)There are differences in offensive and defensive indicators among different ranks of teams,including 7 indicators: goals,assists,field goal percentage,through pass and interceptions,pass success rates,and balls recovered.Conclusions:(1)The defensive counterattack team has achieved better results,pass and control team has performed poorly in 2018 FIFA World Cup in Russia.European and American football still dominates the competition pattern of the 2018 FIFA World Cup in Russia,and their advantages areobvious.(2)The 4 teams in the first rank have the strongest offensive and defensive strength,the 8 teams in the second rank have the stronger offensive and defensive strength,and the 4 teams in the third rank have the worst offensive and defensive strength.(3)High-altitude attack is an important way to break intensive defense;the ground attack with short pass is difficult to break the dense defense.(4)The main factors affecting the outcome of the game are Midfield player's offensive organization ability,set-pieces scoring ability,and the integration of staffing and tactical play in each position,et al.Recommendations:(1)The height factor should be taken into consideration in the process of selecting players.(2)In the training process,players' basic skills and cooperate ability should be improved.(3)The coach should consider the actual situation of the team in the game,formulate tactics that match the characteristics of the players in each position of the team,pay attention to tactical diversity,do not pursue the possession rate blindly,and ensure the efficiency of offense at the same time.