forthcoming *Games and Economic Behavior*

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Text

# An Easier Way to Calibrate

Drew Fudenberg and David K. Levine

March 17, 1995

revised: December 7, 1996

**Abstract:** A forecaster is said to be *calibrated* if, in
the asymptotic limit, the empirical frequencies in periods where each particular
probability distribution is forecast exactly match the forecast probabilities. Recently,
Foster and Vohra have constructed random strategies that are approximately calibrated to
any desired degree. Their construction which relies on a series of approximations is
somewhat complicated. The purpose of this note is to show that a more straightforward
construction serves the same purpose.