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The study re-examines bond valuation and default risk, by considering and relaxing assumptions regarding integer rating migration, and portfolio rating migration, and consequently the implied degree of diversification. A reduced form model, based on (a) rating migration (matrix), serve as basis...
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theory for both actuarial science and practice. Second, in the case of a general cost field, we give sufficient conditions … the risk of extreme events since they appear as a natural extension of multivariate extreme-value theory to the level of …
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expected utility theory. We show that the family of HARA utility functions has a minimum-divergence, shortfall …
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The concept of economic homogeneity in regional science is based on two very different notions: composition and similarity. In the case of the states of the US, measures of homogeneity based on these different notions are negatively correlated with each other, suggesting that the results of...
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