> Well, when we set '--gaussian=NUM' or '--exponential=NUM' on command line, we 
> can see access probability of top N records in result of final output. This 
> out put is under following,
Indeed. I had forgotten this point. This is a significant information that 
I would not like to loose.
> This feature helps user to understand bias of distribution for tuning 
> threshold parameter.
> If this feature is nothing, it is difficult to understand distribution of 
> access pattern, and it cannot realized on custom script. Because range of 
> distribution (min, max, and SQL pattern) are unknown on custom script. So I 
> think present UI is not bad and should not change.
Ok. I agree with this argument.
-- 
Fabien.