Erratum to: “Sufficiency in Blackwell’s theorem” [Math. Social Sci. 46(1) (2003) 21–25]

If one information service is more informative than another, then any agent values it more. In fact, the opposite implication is also true, and this characterization is the celebrated theorem of Blackwell. We present here a short proof. This is a correction of our earlier attempt.

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Bibliographic Details
Published in:Mathematical social sciences 2009-07, Vol.58 (1), p.142-144
Main Author: Bielinska-Kwapisz, Agnieszka
Format: Article
Language:English
Subjects:
Blackwell
Blackwell Information service Information theory
Information service
Information theory
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Description
Summary:If one information service is more informative than another, then any agent values it more. In fact, the opposite implication is also true, and this characterization is the celebrated theorem of Blackwell. We present here a short proof. This is a correction of our earlier attempt.
ISSN:0165-4896
1879-3118
DOI:10.1016/j.mathsocsci.2008.12.008