Research Of The Construction And Application Of "Player Contribution Value System" In Basketball Competition

As one of the "three big balls",basketball is a key sports project in China.On August 10,2019,the general office of the State Council issued the outline for the construction of a sports power,which mentioned: "comprehensively promote the popularization and improvement of football,basketball and volleyball.Actively explore the development path of the "three big balls" with Chinese characteristics,and build a training,competition and reserve talent training system of the "three big balls" led by the government,coordinated by departments and actively participated by social forces.Strengthen international exchanges and cooperation,strengthen scientific and technological assistance,and improve the scientific level of the training and competition of the "three big balls." With the continuous progress and development of science and technology in China,how to intervene in basketball games by means of science and technology,truly reflect the situation of players and teams in the game,so that coaches,players and teams can timely and accurately understand the status of players and teams in the game,which can help players better understand their own ability,help the team better play,and improve our country The overall level of basketball has become one of the important work of basketball workers.This paper uses interview,literature,video analysis,logical analysis,mathematical statistics,questionnaire and Django framework to make a player contribution value and habitual analysis system suitable for all levels of basketball competition,and build a complete "player contribution value system".Through the "player contribution value system" contribution value algorithm settings and players habit analysis report generation principle design,and later software development.After the "player contribution value system" is constructed,it is verified by experiments.In the process of development and after the results produced,it has been recognized by many experts.They all think that the development process and core technology of "player contribution value system" are reasonable,and the results can truly reflect the performance of players and teams on the field,and have high practical value.The main conclusions are as follows（1）Based on the preliminary research and the full sample principle of big data theory,this paper makes full sample records on the performance of players in the playoffs of CBA league from 2015 to 2018,and transforms them into recordable indicators for preliminary expansion of the indicators.The indicators are screened by questionnaire survey method,and finally 80 indicators of "player contribution value system" are determined,including "player contribution value" There are 47 indicators and 58 "players’ habits",among which 25 items are cross items.（2）C + + programming language is used to write the system’s underlying code,python programming language is used to write user level code,and the "player contribution value system" is constructed completely.After the construction of the system,there are seven layers of structure,including interface appearance layer,interface rule layer,business interface layer,business rule layer,data storage layer,data access layer,and conclusion production layer.Through the establishment of data indicators,the establishment of contribution value calculation model,the establishment of system logic,the compilation of system data code,and the revision of system content,the development of "player contribution value system" has been completed and can be used.（3）Build the "player contribution value system" player contribution value algorithm and "player habit analysis report".According to the player’s performance on the court,eight formulas are set up in the system: player contribution value formula,player’s attack contribution value,player’s defense contribution value,player’s offensive breakthrough transformation scoring ability,player’s shooting transformation scoring ability,player’s passing transformation scoring ability,player’s offensive error value and team’s attack efficiency,the player’s contribution value is optimized to be paid according to the round The contribution value is calculated to get the contribution value of players.By using the predictable attributes of big data,we can record the performance of players on the field,get the habit of players,and provide the analysis report of players’ habit for teams,coaches and players.（4）The system experiment of "player contribution value system" shows the expected effect and is recognized by the tested players and teams.Through the experimental verification,the system has a good practical value in the analysis of personal data,habits and team offensive and defensive strategies.It can help players and coaches to improve their ability,carry out targeted training and improve the level of competition.In the practical application,coaches should integrate the types of players according to the characteristics of different players,arrange the players with different characteristics,find more effective player collocation in training,and formulate different types of game strategies,so as to apply them to the competition field and provide more favorable conditions for the competition.（5）"Player contribution value system" has the characteristics of simple operation,high timeliness,high accuracy,high prediction and comprehensive data.After continuous modification,the user input interface design is more concise and the operation mode is more simple.The data and habitual analysis report generation mode has been automated.The system can generate data and habitual analysis report according to the demand during and after the game through on-site data collection,and can provide guidance for the players and teams on-the-spot and after the game.At the same time,"player contribution value system" has the attribute of data accumulation.With the wide application of various basketball games at all levels,player data can be recorded continuously.Combined with historical data,the analysis of players’ habits is not only more accurate,but also can provide help for the growth of players,which has a high practical value for the selection and training of basketball reserve talents.This study puts forward new ideas for the development of multi-disciplinary integration,and puts forward new ideas and prospects for the integration of sports and other disciplines.Through the adjustment and optimization of the system,the "player contribution value system" will be widely used in the future,which can achieve the goal of serving a variety of competitive sports.