Track and Field Techniques Evaluation Based on Improved Fuzzy Sets' Gravity Center Algorithm
Yuangan Wang · Hu'nan Shifan Daxue xuebao. Ziran kexue ban · 2012
It is difficult to evaluate the track and field techniques accurately for PE assessment.Scientific and reasonable evaluation method is concerned with the improvement of the track and field teaching quality.The traditional evaluation methods include expert evaluation method and fuzzy comprehensive evaluation method.Expert evaluation method is easily affected by personal subjective thoughts.Fuzzy comprehensive evaluation method can cause the loss of data information easily,affecting the accuracy of the assessment.Thus an improved fuzzy sets' gravity center algorithm evaluation method is introduced,which is provided by evaluating experts with fuzzy interval mark.And then,the center of gravity of the interval endpoints is calculated.Besides,the proportion of all kinds of influence factors and the authority of the experts are considered,and then a comprehensive decision-making advice forms.This kind of algorithm is fully used the experts' evaluating advice,and easy to handle.The evaluation example verified that the algorithm is scientific and accurate.