Usage: z_normal(s,mu,sigma); # O$ p; i6 y( S2 t& mThe expression s (integer) defines the random number stream, while mu and sigma define mean and deviation of the normal distribution. 0 {4 G/ L: T8 `2 }9 d$ j. g里面的s表示什么意思啊?; j* v0 d' W* l
我主要是The expression s (integer) defines the random number stream中的stream不太理解。8 W- h& C. g5 Q" B V6 z8 R
谢谢各位帮忙! \/ @/ A5 X0 j6 B) _
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[ 本帖最后由 Michelleqiqi 于 2008-5-28 22:40 编辑 ]