ARM2
Release 4
Accuracy *
With
the introduction of ARM2 Release 4,
Club Members were
able to
establish the
accuracy they
want to see in
their
signals for the first time.
Valid
Trend Lines have
a setting called
"Correlation".
This setting
defines how well
the lines fit
the data in the
chart. By
simply cranking
up the value of
this setting,
you can get more
and more
accurate signals
out of
ARM2. This was an important advancement that led to the
creation of ARM3.
Here
are some
performance
reports from
ARM2 confirmed
with Valid Trend
Lines, on the
S&P 100 over
500 bars.
It is important
to note here that
ARM2 profiles
are not
optimized - you
will get the same Signals
whether you look
at Forward Test
or Back Test
results.
ARM2 Release 4 Signals were typically 70%-80% accurate. *
|
S&P
100
Accuracy
=
74%
*
correlation
at .90
|
 |
|
|
|
|
Accuracy
=
82%
*
correlation
at .99
|
 |
Tuning Performance
You
can see from
these
performance
numbers that, as
accuracy
increased from
74% to 82%,
profit per trade
doubled. However, the number of
trades decreased
to 1/10 the
initial
value.
Some users will
want more
signals.
For them, the
former setting
is preferable.
Others will want
the highest
accuracy
possible, and
run thousands of
symbols through
the
system. For them, the
latter setting
is preferable.
ARM3 Evolution
ARM2 R4 was released in
2003. In 2004, we wanted to increase signal count while maintaining accuracy. This was achieved by creating multiple Knowledge Bases
and Neural Networks that are tuned to specific
indicators and systems. The new technology is called
ARM3 improved on the ARM2
Release 4 concept by making available the Neural Network
Scores and a "cutoff" setting. Users can do the
same kind of performance turning with ARM3 that they did
in ARM2 Release 4, by adjusting the cutoff setting in
the Strategy. See
ARM3
for complete information.
* We measured accuracy
differently for ARM2 than ARM3. For a detailed
description of
how we measured the accuracy of ARM2,
please see
How
Accuracy is
Measured.
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