Heavy Tailed Distributions in Economics

A special issue of Risks (ISSN 2227-9091).

Deadline for manuscript submissions: closed (31 July 2018) | Viewed by 7376

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Guest Editor
Department Statistics and Actuarial—Financial Mathematics, University of the Aegean, GR 83200 Samos, Greece
Interests: risk theory; actuarial science; macroeconomics
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Special Issue Information

Dear Colleagues,

The heavy tailed distributions are not the only source of economic instability, but they can be modelled and handled using mathematical tools only. This feature makes them a hot topic in insurance practice in general and especially in regulatory institutions. Its interaction with the dependence issues is a usual complication, which produce many fruitful considerations.

The special issue aims to compile any paper with significant contribution in the state-of-the-art or in the facilitation of the practical implementation of the theoretical approach.

Prof. Dr.  Dimitrios Konstantinides
Guest Editor

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Keywords

  • renewal risk model
  • asymptotic formulas
  • ruin probability
  • dependence modelling
  • optimization procedures

Published Papers (2 papers)

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Research

70 pages, 3893 KiB  
Article
Linear Regression for Heavy Tails
by Guus Balkema and Paul Embrechts
Risks 2018, 6(3), 93; https://0-doi-org.brum.beds.ac.uk/10.3390/risks6030093 - 10 Sep 2018
Cited by 5 | Viewed by 4266
Abstract
There exist several estimators of the regression line in the simple linear regression: Least Squares, Least Absolute Deviation, Right Median, Theil–Sen, Weighted Balance, and Least Trimmed Squares. Their performance for heavy tails is compared below on the basis of a quadratic loss function. [...] Read more.
There exist several estimators of the regression line in the simple linear regression: Least Squares, Least Absolute Deviation, Right Median, Theil–Sen, Weighted Balance, and Least Trimmed Squares. Their performance for heavy tails is compared below on the basis of a quadratic loss function. The case where the explanatory variable is the inverse of a standard uniform variable and where the error has a Cauchy distribution plays a central role, but heavier and lighter tails are also considered. Tables list the empirical sd and bias for ten batches of one hundred thousand simulations when the explanatory variable has a Pareto distribution and the error has a symmetric Student distribution or a one-sided Pareto distribution for various tail indices. The results in the tables may be used as benchmarks. The sample size is n = 100 but results for n = are also presented. The error in the estimate of the slope tneed not be asymptotically normal. For symmetric errors, the symmetric generalized beta prime densities often give a good fit. Full article
(This article belongs to the Special Issue Heavy Tailed Distributions in Economics)
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13 pages, 401 KiB  
Article
Precise Large Deviations for Subexponential Distributions in a Multi Risk Model
by Dimitrios G. Konstantinides
Risks 2018, 6(2), 27; https://0-doi-org.brum.beds.ac.uk/10.3390/risks6020027 - 27 Mar 2018
Viewed by 2525
Abstract
The precise large deviations asymptotics for the sums of independent identical random variables when the distribution of the summand belongs to the class S of heavy tailed distributions is studied. Under mild conditions, we extend the previous results from the paper Denisov [...] Read more.
The precise large deviations asymptotics for the sums of independent identical random variables when the distribution of the summand belongs to the class S of heavy tailed distributions is studied. Under mild conditions, we extend the previous results from the paper Denisov et al. (2010) to asymptotics that are valid uniformly over some time interval. Finally, we apply the main result on the multi-risk model introduced by Wang and Wang (2007). Full article
(This article belongs to the Special Issue Heavy Tailed Distributions in Economics)
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