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Re[2]: [amibroker] Re: 'Rule Based' versus 'Discretionary' trading...



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Title: Re[2]: [amibroker] Re: 'Rule Based' versus 'Discretionary' trading...

Great articles, thank you for posting the links!


herman.



Wednesday, August 20, 2008, 11:15:19 AM, you wrote:


>

http://www.tradingmarkets.com/.site/stocks/commentary/lcbattlep/08272004-39801.cfm

 

http://www.tradingmarkets.com/.site/swingtrading/commentary/lcbattlep/09022004-39899.cfm

----- Original Message ----- 

From: sidhartha70 

To: amibroker@xxxxxxxxxxxxxxx 

Sent: Wednesday, August 20, 2008 10:52 AM

Subject: [amibroker] Re: 'Rule Based' versus 'Discretionary' trading...


I think you're right Brian. We do all use rules of some sort.


But I guess discretionary traders don't use 'hard and fast' rules and

can't always define the same set of rules by which they choose to

define an entry or exit.


For example, as we all know, something as simple as defining a trend

programatically can be more problematic as you might at first think.

However, a good trader can see very quickly what state the market is

in by looking at various time frame of chart.


Likewise, divergences of various sorts can be easy to see with the

naked eye but difficult to code in their entirety.


Like driving a car, or a golf swing, you learn the 'rules' but when

you get really good you are no longer thinking rules... you've

effectively let go of the rules and are just 'doing'...


--- In amibroker@xxxxxxxxxxxxxxx, "brian_z111" <brian_z111@xxx> wrote:

>

> Here is my definition:

> We are all rule based traders.

> Mechanical Traders are a specialist group who have programmed 

> computers to autotrade their rules OR automatically announce their 

> rules via computer communications (audio, email, chart prompts, 

> spoken text etc).

> I am prepared to continue the discussion with any seers, inituitives 

> etc, who come forward, and adjust my definition to meet anything new 

> that comes out of that.

> In advance I admit to the possibility of exceptions to the rule.

> brian_z

> --- In amibroker@xxxxxxxxxxxxxxx, "brian_z111" <brian_z111@> wrote:

> >

> > >Descretionary traders make decisions that are based on personal 

> > >knowledge and circumstances, perhaps using many factors unknown to 

> > >themselves. Like which journal they read the night before. 

> > 

> > This is the nub of the question for sure, and the point that I am 

> > investigating.

> > 

> > I suspect that when they (self-nominated DT's) think they are 

> making 

> > discretionary decisions they are in fact making rule based 

> decisions.

> > 

> > That is why I asked for specific examples of 'discretionary' 

> decision 

> > making e.g. I haven't seen Bilbo's chart yet but I consider it 

> highly 

> > unlikely that the decision about whether a trend is in place is a 

> > discretionary decision - I can define a trend in several different 

> > ways - all of them can readily be written as a rule (in words or 

> with 

> > code) - I don't care if the definitions are 'correct' or not as 

> long as 

> > the system that they are part of works i.e. my rules for a trend 

> depend 

> > on the context.

> > 

> > As Dennis said, our rules might be difficult to program, causing us 

> not 

> > to automate the trade, but mentally we are still running the rules 

> and 

> > if we are honest with ourselves we do know what the rules are.

> > 

> > 

> > >For a novice traders to try and mimic the techniques (of 

> Discretionary 

> > >Traders) without 

> > >having similar backgrounds merits caution.

> > 

> > What I am suggesting is that, over time, the sub-conscious mind 

> will 

> > automate what was intially habitual conscious behaviour, and even 

> make 

> > some improvements on it, so that 'we' can skip the conscious part 

> for 

> > some 'tasks' e.g. driving the car becomes second nature.

> > 

> > That won't happen for new traders, in a short time, so they do need 

> to 

> > persevere, be patient and not try to mimic people who have been 

> around 

> > for years.

> > 

> > IMO formal (written) rules based trading/backtesting/optimization 

> is 

> > the best place to start - it grinds the basic lessons in very well.

> > 

> > If anyone can look at a chart, and without recourse to any rules, 

> know 

> > which way the price is going to move and trade successfully  (long 

> > term) on that basis then that is something else altogether.

> > 

> > If it is at all possible to do that then it definitely can't be 

> taught.

> > 

> > That is why I asked, "Anyone doing it?".

> > 

> > It is just like >100%PA returns - anything is possible but once 

> someone 

> > confirms that they have done it then it moves from the realm of 

> > possibility into reality.

> > 

> > In the meantime I will stick to my guns by saying that "except for 

> > people who KNOW what the price is going to do everyone else is a 

> rule 

> > based trader and categorizing traders, as DT's or MT's, is 

> arbitrary".

> > 

> > brian_z

> >

>




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