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Updated: Feb 3, 2026

Perspectives on Neuroscience
Published on: July 31, 2007
New perspectives on multilocus ancestry informativeness
1Max-Planck-Institute for Mathematics in the Sciences, Inselstrasse 22, Leipzig D-04103 Germany.
Abstract:
We present an axiomatic approach for multilocus informativeness measures for determining the amount of information that a set of polymorphic genetic markers provides about individual ancestry. We then reveal several surprising properties of a decision-theoretic based measure that is consistent with the set of proposed criteria for multilocus informativeness. In particular, these properties highlight the interplay between information originating from population priors and the information extractable from the population genetic variants. This analysis then reveals a certain deficiency of mutual information based multilocus informativeness measures when such population priors are incorporated. Finally, we analyse and quantify the inevitable inherent decrease in informativeness due to learning from finite population samples.
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