Input parameters for "Stochastic Momentum Index" indicator?

[johnnybegoode]

What are the the typical input parameters for "Stochastic Momentum Index" indicator?
Which are
Input parameters:
q - the period by which the Stochastic Momentum is calculated
r - period of 1-st EMA, applied to Stochastic Momentum
s - period of the 2nd EMA, applied to the results of the 1st smoothing
u - period of the 3rd EMA, applied to the results of the 2nd smoothing


I have seen
1) 2, 8, 5, 5
2) 5, 20, 5, 3
3) 13, 25, 2, 5
4) 12, 2, 3, 9
5) 10, 3, 3, 10
6) 14, 9, 9, 3
...
and so on?

What's your parameters?

What parameters would you recommend and why?

Thank you!

 

[Enivid]

I do not use SMI in trading, but the indicator's author (William Blau) has written a nice article on using the indicator and what parameters are appropriate in different cases: http://technical.traders.com/archive/articlefinal.asp?file=\V11\C01\STOCHAS.pdf