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With moving averages, you either suffer lag in order to avoid
overshoot, or your average overshoots in order to avoid lag.
I know nothing about the mechanics behind PLA, but I did see a
comparison of PLA and JMA at
http://www.precisiontradingsystems.com/PLA%20v%20Other_averages.htm
Some of their comparisons are not valid, however. They claim that PLA
"stays locked on the trend while JMA reversed." Many averages stay on
trend because of their lag; that's one of the ways they filter out
small, non-trending corrections or "noise." JMA, however, uses signal
processing to filter noise and the user tunes JMA to filter as much or
as little noise as he or she wishes. In PLA's comparison, they appear
to have simply tuned JMA to track price in the manner most flattering
to PLA.
From: Yahoo <dv8256@xxxxxxxxx>
To: "equismetastock@xxxxxxxxxxxxxxx" <equismetastock@xxxxxxxxxxxxxxx>
Date: Friday, March 5, 2010, 4:21:30 AM
Subject: [EquisMetaStock Group] JMA or PLA
I was amazed at the claim of moving average of PLA of precision@xxxxxxxxxxxxxx
That PLA is supposed to b better than JURIK JMA as overshoot is avoided
Any comments from veterans ?
Thanks
Dhiraj
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