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RSS FeedsEntropy, Vol. 21, Pages 585: Betting, Selection, and Luck: A Long-Run Analysis of Repeated Betting Markets (Entropy)

 
 

13 june 2019 12:01:21

 
Entropy, Vol. 21, Pages 585: Betting, Selection, and Luck: A Long-Run Analysis of Repeated Betting Markets (Entropy)
 




We consider a repeated betting market populated by two agents who wage on a binary event according to generic betting strategies. We derive new simple criteria, based on the difference of relative entropies, to establish the relative wealth of the two agents in the long-run. Little information about agents’ behavior is needed to apply the criteria: it is sufficient to know the odds traders believe fair and how much they would bet when the odds are equal to the ones the other agent believes fair. Using our criteria, we show that for a large class of betting strategies, it is generically possible that the ultimate winner is only decided by luck. As an example, we apply our conditions to the case of Constant Relative Risk Averse (CRRA) and quantal response betting.


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34 viewsCategory: Informatics, Physics
 
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