Hi Bob
Thanks for the feedback.
I totally agree with you regarding consistency and discipline. I don't
use Multi-AIO for that reason. Changing the number of quotes for BT
too frequently (on Multi-AIO's recommendation) doesn't make a lot of
sense to me. In my view that's taking 'curve fitting' to a theoretical
extreme.
Would be interesting to know if/how the developer has changed the
formula for BCI. BCI and ITA are 'black box' indicators, whose formula
is known only to the developer. I prefer to have confirmation from the
other indicators, so I tend to use BBI instead.
Assuming that I understand you correctly, even if one doesn't use
Multi-AIO (i.e. keeps the number of quotes consistent), I would expect
that the BUY/SELL signals would change as AIO's are performed on
subsequent days, since AIO operates on a 'rolling window' of data.
Having the oldest data is excluded from consideration means that AIO
starts with a different set of data points each time, with potentially
different results. I agree that if one takes this further, by using
Multi-AIO to constantly change the number of quotes, the results are
going to be totally erratic, since this is not only changing the data
set, but also the size of the window.
Anyway, thanks again for your comnments.
David
--- In [email protected], "Bob" <[EMAIL PROTECTED]> wrote:
>
>
> I disagree. In the older versions optimized BCI was more consistent
> and resulted in cyclic sine waves fo a good deal of stocks. The
> older versions could read Yahoo data just as well but the developer
> has blocked them with a pop-up window urging to update to new
> version. This is contrary to what one would expect. let me choose
> the version.
>
> Besides the multiple AIO is not working. I checked BC and as time
> goes by the historic BUY/ SELL days change with subsequent AIO's.
> That is not proper optimization. One wants consistency and
> discipline, the only way to make money. You follow the Multiple AIO
> and you loose money. Do it on paper and see what i mean.
> Trust me the only version that had merrit was one of those listed by
> me and the merrit was solely for the BCI algorithm (not that was
> perfect, but it showed some consistency)
>
> --- In [email protected], "david_louisson"
> <[EMAIL PROTECTED]> wrote:
> >
> > Bob
> >
> > Sorry, I can't help you. The earliest version I have saved is
> 4.32.2.
> > Moreover, assuming that Rik is correct, this no longer reads the
> Yahoo
> > data servers correctly.
> >
> > However, I wonder what you mean when you say that the algorithms
> are
> > no longer that good. Is it because the back-testing is returning
> lower
> > profit?
> >
> > Only the developer himself could answer this definitively, but I
> don't
> > see how or why the 'algorithms' (e.g. calculating indicators and
> their
> > MA crossovers, which generate the buy/sell signals) would have
> > changed. New features (e.g. Multi-AIO, ability to AIO/BT on
> > gain%-per-trade as an alternative to total-gain%) have been added,
> but
> > the ability to run with the previous AIO/BT 'algorithm', by
> selecting
> > the relevant options, should still remain intact. To the best of my
> > knowledge, no prior capability has been removed.
> >
> > If the back-testing is returning lower profit, then there could be
> a
> > number of other contributing reasons:
> > 1. The consistency of data is poor, a Yahoo problem.
> > 2. Prices and patterns in the market, e.g. cycle lengths,
> volatility,
> > trend consistency, have meanwhile changed. AIO/BT uses a 'moving'
> data
> > window.
> > 3. The 'before' and 'after' trials are based around differing
> > criteria, e.g. different stocks, different time frames, different
> > parameters entered.
> >
> > And if the developer had actually changed the AIO/BT algorithms,
> then
> > aside from running AIO/BT using both versions across the same data,
> > and getting different results, how would any of us know for sure?
> >
> > I'm not playing devil's advocate for the sake of it, nor am I
> trying
> > to persuade you to buy the new version. I'm genuinely curious to
> know
> > what you mean. If the algorithms have changed, and I could discover
> > exactly how, then I may need to adjust my trading system.
> >
> > David
> >
> > --- In [email protected], "Bob" <[EMAIL PROTECTED]> wrote:
> > >
> > >
> > > Then it's too bad. The algorithm in the latest versions is just
> not
> > > that good and I am not prepared to pay the money. Can anybody
> make
> > > the previous versions work?
> > >
> > > --- In [email protected], "Rik Rasmussen"
> <[EMAIL PROTECTED]>
> > > wrote:
> > > > One problem you have with old versions is, they do not have
> > > updates required
> > > > by data server changes at Yahoo. To insure ability to get
> data,
> > > you need to
> > > > use latest version. Old versions are no longer supported.
> > > >
> > > > Rik Rasmussen
> > > > Best Charts Yahoo Group Moderator
> > > > http://groups.yahoo.com/group/bestcharts/
> > > >
> > > > > -----Original Message-----
> > > > > From: Bob [mailto:[EMAIL PROTECTED]
> > > > > Sent: Sunday, January 16, 2005 12:49 PM
> > > > > To: [email protected]
> > > > > Subject: [bestcharts] BC versions 4.32/4.321
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > I was very satisfied with versions 4.32 and 4.321. I don't
> > > > > particularly like the newer versions and for that reason I
> did
> > > not
> > > > > purchase any. Any idea how to be able to use one of those two
> > > > > versions? I mean not to crack them but rather buy?
> > > > > Thanks.
> > > > > Bob
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