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First: i haven't been at the Jurik site for years so I can't say what has
changed or been added since I made my tests.
My test was a very short-term high effciency trading system based on the T3.
The test was over about ten years of data, of course the Jurik formula was
re-optimized (by an experienced developer) in my code: it was NOT a simple
drop-in substitution.
You have to be careful with no-lag and/or little-lag; no-lag is not always
desirable. You need some lag to get your triggers and certain systems, like
Oscilators, can give you any amount of lead/lag you want by varying the
threshold.
The only sales-pitch that made sense for me was that Jurik proposed that you
use the JMA as a substitute for your price array. This would indeed get rid
of many whipsaws, but so would the T3, DEMA and TEMA in a similar
application. Download the two articles from TASC (traders.com) on the T3,
they fully explain its math and use, including adaptive applications.
As far as i know the DLL math is indentical to the afl version.
There are hundreds of ways to use the T3 :-) its performance all depends on
how you apply it, that goes for all indicators, also for Jurik products.
the hbEquity() offers a FeedBack flag and some return values, as explained
in my earlier email today. Unless you want to experiment you should use the
AB Equity().
best regards,
Herman
-----Original Message-----
From: Dave Merrill [mailto:dmerrill@xxxxxxx]
Sent: Monday, September 01, 2003 1:36 PM
To: amibroker@xxxxxxxxxxxxxxx
Subject: RE: [amibroker] Jurik enhanced indicators
hi herman, thanks for the feedback.
my understanding is that the lack of lag in the jurik stuff makes drop-in
replacement not necessarily a good idea. depending on how your system works,
you might need to optimize, maybe even redesign, to make good use of them.
for example, they say that lag is an important part of the MACD mechanism,
so replacing all the EMAs in it with JMA is a bad idea; replacing only the
fast one is better (not sure about the signal one). would you think this
concern might apply to the tests you did?
I'm confused about t3 though. I looked at the AFL version by Dale Butkowski,
and as a trading system, as written, it didn't appear to perform well at
all. tons of trades, minimal accuracy, almost no significant gains since
'92. is there more than one AFL version? is this the same indicator your DLL
does?
while I've got you, tell me about hbEquity. are there any docs for it? what
does it provide that AB's native Equity() function doesn't?
thanks,
dave
> The problem with Jurik is that the product is so "well-guarded" that you
> can't evaluate it. If you have a specific application you might
> try to find
> somebody who can run your code on their machine w/jurik stuff, to see if
> your code performs better using Jurik functions. I managed to do that and
> found that in my particular system/application (it may be different in
> others) it didn't even come close to the simple hbt3a(). BTW, the
> hbt3a() is
> a DLL for the T3 published in TASC, nothing secret or magical
> about it - it
> is also in the AB library in pure afl.
>
> best regards,
> herman
>
> has anyone tried Jurik's enhanced indicator functions? if so, what did you
> think?
>
> they're pricey for sure, relative to AB especially, but do look
> interesting.
> if they really solve some of the the things they say they do, that'd be
> great, but that goes for a lot of stuff (:-). I've looked in the list
> archive, and didn't find anyone singing their praises, but just
> thought I'd
> ask. (in fact, that's how I found out about Herman's HBT3A, was archive
> posts about the Jurik stuff.)
>
> link is here, if you're interested:
> http://www.jurikres.com/catalog/catalog.htm#technical
>
> thanks,
>
> Dave Merrill
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