Title
Variance Allocation and Shapley Value.
Abstract
Motivated by the problem of utility allocation in a portfolio under a Markowitz mean-variance choice paradigm, we propose an allocation criterion for the variance of the sum of n possibly dependent random variables. This criterion, the Shapley value, requires to translate the problem into a cooperative game. The Shapley value has nice properties, but, in general, is computationally demanding. The main result of this paper shows that in our particular case the Shapley value has a very simple form that can be easily computed. The same criterion is used also to allocate the standard deviation of the sum of n random variables and a conjecture about the relation of the values in the two games is formulated.
Year
DOI
Venue
2016
10.1007/s11009-016-9540-5
Methodology and Computing in Applied Probability
Keywords
Field
DocType
Shapley value, Core, Variance game, Covariance matrix, Computational complexity, 91A12, 62J10
Mathematical optimization,Random variable,Mathematical economics,Shapley value,Portfolio,Covariance matrix,Bondareva–Shapley theorem,Standard deviation,Conjecture,Mathematics,Computational complexity theory
Journal
Volume
Issue
ISSN
abs/1606.09424
3
1573-7713
Citations 
PageRank 
References 
0
0.34
8
Authors
3
Name
Order
Citations
PageRank
Riccardo Colini-Baldeschi1429.30
Marco Scarsini216433.96
Stefano Vaccari300.34