Year: 2013
Type: article
Abstract: The Brier Score is a widely used criterion to assess the quality of probabilistic predictions of binary events. The expectation value of the Brier Score can be decomposed into the sum of three components called reliability, resolution and uncertainty, which characterize different forecast attributes. Given a dataset of forecast probabilities and corresponding binary verifications, these three components can be estimated empirically. Here, propagation of uncertainty is used to derive expressions that approximate the sampling variances of the estimated components. Variance estimates are provided for both the traditional estimators, as well as for refined estimators that include a bias correction. Applications of the derived variance estimates to artificial data illustrate their validity and application to a meteorological prediction problem illustrates a possible usage case. The observed increase of variance of the bias‐corrected estimators is discussed.
DOI: 10.1002/qj.2228
Author: Stefan Siegert
Institution: University of Exeter
Language: English
Subfield: Atmospheric Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2592955804