The P.I.D. - Page 15

Techguy · #**141** (**permalink**) 09-08-2008, 08:02 AM

Quote:

Originally Posted by MiniMe

The expert is called the PID, but it has nothing to do with PID controllers

The idea of a PID is to control the system by adding or removing gain, which is impossible to apply in forex as we have no control over the price in forex , so idea of using a PID controller in the forex market is not vlaid unless you have multi billion dollar account and you want to play with the price.

Nicely put, and no disputing this.

Techguy · #**142** (**permalink**) 09-08-2008, 08:23 AM

Quote:

Originally Posted by omelette

Cool video - a sort of poor-man's 'Asimo' attempt!

I have just a lay-mans understanding of PID but in your opinion, shouldn't trading just one currency pair with it be far more likely to produce a long-term positive result - at least in theory - rather than trading baskets? It seems impossible to me that you could have any form of 'control' trading multiple currencies...

If the purpose of the basket is to isolate a currency for its true direction, then that would have some usefulness, and serve a purpose.

One Non Farm Payroll double spike will upset any controller. The martingaling ring out of the controller will be substantial.

Check this abstract out concerning a controller for Open Heart surgery, where the heart is allowed to continue to beat during the operation:

IEEE Xplore - Login

agisthos · #**143** (**permalink**) 10-11-2008, 06:20 AM

An update on the PID. After PID4 crashed and burned cleaning out many peoples accounts, and new version PID5 was released. This version also crashed and burned.

I always demoed, thankfully.

I got very wary when the creator of the EA started talking about optimizing the EA for different currency pairs. Ay optimization, apart from the ATR, is backfitting plain and simple. It will never stand the test of time.