منابع مشابه
Sex, mixability, and modularity.
The assumption that different genetic elements can make separate contributions to the same quantitative trait was originally made in order to reconcile biometry and Mendelism and ever since has been used in population genetics, specifically for the trait of fitness. Here we show that sex is responsible for the existence of separate genetic effects on fitness and, more generally, for the existen...
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We consider the setting of prediction with expert advice; a learner makes predictions by aggregating those of a group of experts. Under this setting, and with the right choice of loss function and “mixing” algorithm, it is possible for the learner to achieve constant regret regardless of the number of prediction rounds. For example, constant regret can be achieved with mixable losses using the ...
متن کاملA mixability theory for the role of sex in evolution.
The question of what role sex plays in evolution is still open despite decades of research. It has often been assumed that sex should facilitate the increase in fitness. Hence, the fact that it may break down highly favorable genetic combinations has been seen as a problem. Here, we consider an alternative approach. We define a measure that represents the ability of alleles to perform well acro...
متن کاملA mixability theory of the role of sex in evolution
sex in evolution Adi Livnat∗† ‡, Christos Papadimitriou ‡ , Jonathan Dushoff § and Marcus W. Feldman ¶ †Miller Institute for Basic Research in Science, University of California, Berkeley, CA 94720 USA,‡Department of Electrical Engineering and Computer Science, University of California, Berkeley, CA 94720 USA,§Department of Biology, McMaster University, Hamilton, ON L8S 4K1 CANADA, and ¶Departme...
متن کاملAdvances in Complete Mixability
The concept of complete mixability is relevant to some problems of optimal couplings with important applications in quantitative risk management. In this paper, we prove new properties of the set of completely mixable distributions, including a completeness and a decomposition theorem. We also show that distributions with a concave density and radially symmetric distributions are completely mix...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2010
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.0910734106