[Retracted] Construction Principles of Physical Fitness Training Objective System Based on Machine Learning and Data Mining

Table 4

Calculation results of decision tree algorithm combined with physical fitness data.

Calculation items	YS	ZX	DL	TN
Subset expected information value (E)	0.9417	0.9108	0.8648	0.9402
Information gain value (gain)	0.0037	0.0257	0.0707	0.0063
Split information value (split)	0.8571	0.7500	0.9155	0.9874
Information gain rate (gain ratio)	0.0044	0.0373	0.0772	0.0063

Note. YS: diet; ZX: work and rest; DL: exercise habits; TN: importance of physical education.