Fortnow, Lance; Vohra, Rakesh V. - In: Econometrica 77 (2009) 1, pp. 93-105
Consider a weather forecaster predicting a probability of rain for the next day. We consider tests that, given a finite sequence of forecast predictions and outcomes, will either pass or fail the forecaster. Sandroni showed that any test which passes a forecaster who knows the distribution of...