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Risk aggregation with dependence uncertainty

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      <subfield code="a">Bernard, Carole</subfield>
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      <subfield code="a">Risk aggregation with dependence uncertainty</subfield>
      <subfield code="c">Carole Bernard, Xiao Jiang, Ruodu Wang</subfield>
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      <subfield code="a">Risk aggregation with dependence uncertainty refers to the sum of individual risks with known marginal distributions and unspecified dependence structure. We introduce the admissible risk class to study risk aggregation with dependence uncertainty. The admissible risk class has some nice properties such as robustness, convexity, permutation invariance and affine invariance. We then derive a new convex ordering lower bound over this class and give a sufficient condition for this lower bound to be sharp in the case of identical marginal distributions. The results are used to identify extreme scenarios and calculate bounds on Value-at-Risk as well as on convex and coherent risk measures and other quantities of interest in finance and insurance. Numerical illustrations are provided for different settings and commonly-used distributions of risks.</subfield>
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      <subfield code="w">MAP20077100574</subfield>
      <subfield code="t">Insurance : mathematics and economics</subfield>
      <subfield code="d">Oxford : Elsevier, 1990-</subfield>
      <subfield code="x">0167-6687</subfield>
      <subfield code="g">13/01/2014 Volumen 54 Número 1 - enero 2014 </subfield>
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