Program sfpreerror | Prediction error 
[SYNOPSIS]
sfpreerror < in.rsf predict=pre.rsf > out.rsf type=1
[PARAMETERS]
file    | predict | = |   | 	auxiliary input file name
int     | type | =1 |   | 	if compute relative error, 1: yes, 0: no, default is yes. 
[DIRECTORY]
user/chenyk
