Re: [GT] Input validation in Tools.pm

["Robert A. Schmied" <ras AT acm.org>]

Weigert, Thomas wrote:
> Linear regression is used typically in two ways:
>
> 1. estimate future values of an indicator based on curve fitting of past
> values. (See the discussion in Chande, "The New Technical Trader" 1994.)

aloha thomas: would that i could -- wonder i can find an affordable copy
on the web, or maybe a pdf file ...

but thanks for the reference.

> 2. determine whether an indicator has reached a peak or trough and
> turned around (the slope of the linear regression changes sign).

hey, now this is useful. can you share gt ind-sig descriptions
that take advantage of this?

and can you explain about 2nd and 3rd arguments to LinearRegression.
i'm unable to make a connection between 'dependent' and 'independent'
and what it all means.


ras


> Th.
>
>
> > -----Original Message-----
> > From: Robert A. Schmied [mailto:ras
AT
acm.org]
> > Sent: Sunday, July 06, 2008 6:41 PM
> > To: sam_backtester
AT
yahoo.fr
> > Cc: devel
AT
geniustrader.org
> > Subject: Re: [GT] Input validation in Tools.pm
> >
> >
> > > For
> > > the LinearRegression, there is some information available in
> >
> > wikipedia
> >
> > > and investopia.com, for example.  But didn't find a link which
> >
> > explains
> >
> > > clearly why it's important in TA.
> >
> > yep -- that's about where i am -- not being able to figure out what to
> > do with it.