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A Rant About Base Effects — Brian Romanchuk

Summary:
I ran across some silly commentary about inflation that did not take into account base effects. I just want to explain how to avoid this problem using elementary results from systems theory. The short version is to use a first order low pass filter, which economists vaguely label an "exponential moving average" (or something like that). Since it was used to generate "adaptive expectations," I strangely labelled it "adaptive average" in the above figure.Bond EconomicsA Rant About Base EffectsBrian Romanchuk

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I ran across some silly commentary about inflation that did not take into account base effects. I just want to explain how to avoid this problem using elementary results from systems theory. The short version is to use a first order low pass filter, which economists vaguely label an "exponential moving average" (or something like that). Since it was used to generate "adaptive expectations," I strangely labelled it "adaptive average" in the above figure.
Bond Economics
A Rant About Base Effects
Brian Romanchuk
Mike Norman
Mike Norman is an economist and veteran trader whose career has spanned over 30 years on Wall Street. He is a former member and trader on the CME, NYMEX, COMEX and NYFE and he managed money for one of the largest hedge funds and ran a prop trading desk for Credit Suisse.

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