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Strategies & Market Trends : Technical Analysis- Indicators & Systems
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To: Spots who wrote (3132)4/13/1998 8:39:00 PM
From: ftth  Read Replies (2) of 3325
 
Hi spots, I found the force index reference: it's an EMA of Volume*(close today-close yesterday). Big deal, huh. Conceptually, I can see how the name came about, but I don't believe it is very useful. I've done that calculation experiment before and didn't even know someone had the nards to associate their name with its "discovery."

Inertia I've played with in the past, and it appeared to have some promise. It's built-in to Metastock 6.5 and has some tweaking ability. Essentially, it is a smoothed, directional volatility measure (using standard deviation of closing prices, separated into up and down closes). I don't really like using standard deviation over short periods as a measure of volatility (I babble about that here:
Message 3800590
and in a couple surrounding posts). I'd appreciate any comments you might have.

Mass index I can't find in my stack of papers, but I did find a reference to the mass index article I was looking for: TASC vol 10:6. It's also built in to metastock, but the documentation for metastock isn't much help if you want to understand how it's being implemented (which I think is EXTREMELY important).
Dorsey's mass index is: EMA of daily range; use a fast and a slow EMA

dh
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