[Retracted] Prediction Analysis of College Students’ Physical Activity Behavior by Improving Gray Wolf Algorithm and Support Vector Machine

Table 1

Benchmark functions.

Function		The formula	Dimension	A search scope	The minimum value
Unimodal function	Sphere		35	(−150, 150)	0
	Schwefel		35	(−15, 15)	0
Multimodal function	Rastrigin		35	(−5.14, 5.14)	0
	Ackley		35	(−35, 35)	0