Bayes discriminant analysis-based juvenile volleyball athlete sports quality criterion research

摘要

Youth volleyball plays a very important role in juvenile physical quality, healthy growth.At the present stage, China has already enlarged selection and cultivation on juvenile volleyball athletes, and got certain achievements. No doubt, juvenile volleyball athlete sports quality criterion research has become an important task of Chinese volleyball sustainable development. The papermainly utilizesBayes discriminant analysismethod, firstly it makes a general survey of world juvenile volleyball athlete management mode, researches on its management superiorities and management philosophy, and on this basis, it horizontally researches on present stage Chinese juvenile volleyball athlete status, and puts forward existing issues. Secondly, establish Bayes discriminant analysis-based juvenile volleyball athlete sports quality criterion researchmodel. Combine with juvenile volleyball sports quality affected speed quality, power quality, springing quality and sensitive quality such four items??? first grade indicators, it defines corresponding second grade indicators that 30m standing start, medicine ball throwing, running-up reach, V moving and total performance Bayes discriminant classification function. In addition, it makes model improvement on this basis, considering events prior probabilities, it establishes improved Bayes discriminant classification function that improves discriminant accuracy so that defines juvenile volleyball sports quality discriminant criterion.