Algorithm 1 Scale-Adjusting Algorithm.
1:	INPUT
2:	$A_{esn}$, ${\sigma }_1$,${\sigma }_{1,max}$, ${\sigma }_{1,min}$, $\lambda$;
3:
4:	OUTPUT
5:	${\sigma }_1$, ${\sigma }_{1,max}$,${\sigma }_{1,min}$;
6:
7:	if$A_{esn}=0$then
8:	if ${\sigma }_{1,max}-{\sigma }_1<ϵ$ then
9:	Let ${\sigma }_{1,max}={\sigma }_{1,max}/\lambda$;
10:	end if
11:	Let ${\sigma }_{1,min}={\sigma }_1$;
12:	Calculate ${\sigma }_1={\sigma }_1+\lambda ({\sigma }_{1,max}-{\sigma }_1)$;
13:	else
14:	if $A_{esn}>1$ then
15:	if ${\sigma }_1-{\sigma }_{1,min}<ϵ$ then
16:	Let ${\sigma }_{1,min}=\lambda {\sigma }_{1,min}$;
17:	end if
18:	Let ${\sigma }_{1,max}={\sigma }_1$;
19:	Calculate ${\sigma }_1={\sigma }_1-\lambda ({\sigma }_1-{\sigma }_{1,min})$;
20:	end if
21:	end if