Proper local scoring rules

We investigate proper scoring rules for continuous distributions on the real line. It is known that the log score is the only such rule that depends on the quoted density only through its value at the outcome that materializes. Here we allow further dependence on a finite number $m$ of derivatives o...

Disgrifiad llawn

Manylion Llyfryddiaeth
Prif Awduron: Parry, M, Dawid, A, Lauritzen, S
Fformat: Journal article
Iaith:English
Cyhoeddwyd: 2011
Disgrifiad
Crynodeb:We investigate proper scoring rules for continuous distributions on the real line. It is known that the log score is the only such rule that depends on the quoted density only through its value at the outcome that materializes. Here we allow further dependence on a finite number $m$ of derivatives of the density at the outcome, and describe a large class of such $m$-local proper scoring rules: these exist for all even $m$ but no odd $m$. We further show that for $m\geq2$ all such $m$-local rules can be computed without knowledge of the normalizing constant of the distribution.