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Special Issue Editors

Dr. Yiqing Chen

E-Mail Website
Guest Editor

College of Business and Public Administration, Drake University, Des Moines, IA 50311, USA
Interests: extreme risks in insurance and finance; quantitative risk management; insurance solvency analysis
Special Issues, Collections and Topics in MDPI journals

Prof. Dr. Xiaohu Li

E-Mail Website
Guest Editor

Stevens Institute of Technology, Hoboken, NJ 07030, USA
Interests: dependence modelling; stochastic orders; quantitative risk management

Special Issue Information

Dear Colleagues,

The journal Risks has launched a Special Issue on “Heavy-Tail Phenomena in Insurance, Finance, and Other Related Fields” in conjunction with the Workshop on Heavy-Tail Phenomena and the Workshop on Insurance and Financial Risks held in China in June 2018.

Heavy-tail phenomena, existing everywhere and usually taking the form of natural or man-made catastrophes, have attracted much attention from academics and practitioners in insurance, finance, information science, and environmental science. The 4^th International Workshop on Statistical Modeling of Heavy-Tail Phenomena with Applications, hosted by Xi’an Jiaotong-Liverpool University, 1–4 June 2018, is an important platform for exchanging research ideas and disseminating recent advances on this topic. Keynote speakers are: Thomas Mikosch (University of Copenhagen), Sidney Resnick (Cornell University), Gennady Samorodnitsky (Cornell University), and Qihe Tang (University of Iowa and University of New South Wales).

Interplay of insurance and financial risks is a newly emerging research topic in the interface of insurance, finance, and risk management. It is in accordance with the contemporary trends that insurers make risky investments to optimize profits and investors buy insurance against catastrophic losses, making them exposed to both insurance and financial risks. The International Workshop on Risks in Insurance and Finance, hosted by Northwest Normal University, 7–9 June 2018, offers an exciting gathering of the leading researchers in these fields. Keynote speakers are: Darinka Dentcheva (Stevens Institute of Technology), Harry Joe (University of British Columbia), and Etienne Marceau (Université Laval).

We welcome all participants of the two workshops to submit their manuscripts to this Special Issue. All manuscripts will be refereed through the same peer-review process of the journal.

Prof. Dr. Yiqing Chen
Prof. Dr. Xiaohu Li
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Risks is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

Heavy tail
Insurance risk
Financial risk
Statistical modeling
Dependence
Stochastic optimization
Risk management
Extremes

Published Papers (4 papers)

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Research

8 pages, 334 KiB

Open AccessArticle

A Renewal Shot Noise Process with Subexponential Shot Marks

by Yiqing Chen

Risks 2019, 7(2), 63; https://doi.org/10.3390/risks7020063 - 05 Jun 2019

Cited by 2 | Viewed by 2524

Abstract

We investigate a shot noise process with subexponential shot marks occurring at renewal epochs. Our main result is a precise asymptotic formula for its tail probability. In doing so, some recent results regarding sums of randomly weighted subexponential random variables play a crucial [...] Read more.

(This article belongs to the Special Issue Heavy-Tail Phenomena in Insurance, Finance, and Other Related Fields)

15 pages, 500 KiB

Open AccessArticle

Robust Estimations for the Tail Index of Weibull-Type Distribution

by Chengping Gong and Chengxiu Ling

Risks 2018, 6(4), 119; https://doi.org/10.3390/risks6040119 - 11 Oct 2018

Cited by 3 | Viewed by 3498

Abstract

Based on suitable left-truncated or censored data, two flexible classes of M-estimations of Weibull tail coefficient are proposed with two additional parameters bounding the impact of extreme contamination. Asymptotic normality with

\sqrt{n}

-rate of convergence is obtained. Its robustness is discussed via [...] Read more.

\sqrt{n}

-rate of convergence is obtained. Its robustness is discussed via its asymptotic relative efficiency and influence function. It is further demonstrated by a small scale of simulations and an empirical study on CRIX. Full article

(This article belongs to the Special Issue Heavy-Tail Phenomena in Insurance, Finance, and Other Related Fields)

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Figure 1

15 pages, 1657 KiB

Open AccessArticle

Some Results on Measures of Interaction between Paired Risks

by Rui Fang and Xiaohu Li

Risks 2018, 6(3), 88; https://doi.org/10.3390/risks6030088 - 27 Aug 2018

Cited by 4 | Viewed by 2825

Abstract

Co-risk measures and risk contribution measures have been introduced to evaluate the degree of interaction between paired risks in actuarial risk management. This paper attempts to study the ordering behavior of measures on interaction between paired risks. For various co-risk measures and risk contribution measures, we investigate how the marginal distributions and the dependence structure impact on the level of interaction between paired risks. Also, several numerical examples based on Monte Carlo simulation are presented to illustrate the main findings. Full article

(This article belongs to the Special Issue Heavy-Tail Phenomena in Insurance, Finance, and Other Related Fields)

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Figure 1

16 pages, 1043 KiB

Open AccessArticle

Bayesian Adjustment for Insurance Misrepresentation in Heavy-Tailed Loss Regression

by Michelle Xia

Risks 2018, 6(3), 83; https://doi.org/10.3390/risks6030083 - 17 Aug 2018

Cited by 3 | Viewed by 2831

Abstract

In this paper, we study the problem of misrepresentation under heavy-tailed regression models with the presence of both misrepresented and correctly-measured risk factors. Misrepresentation is a type of fraud when a policy applicant gives a false statement on a risk factor that determines the insurance premium. Under the regression context, we introduce heavy-tailed misrepresentation models based on the lognormal, Weibull and Pareto distributions. The proposed models allow insurance modelers to identify risk characteristics associated with the misrepresentation risk, by imposing a latent logit model on the prevalence of misrepresentation. We prove the theoretical identifiability and implement the models using Bayesian Markov chain Monte Carlo techniques. The model performance is evaluated through both simulated data and real data from the Medical Panel Expenditure Survey. The simulation study confirms the consistency of the Bayesian estimators in large samples, whereas the case study demonstrates the necessity of the proposed models for real applications when the losses exhibit heavy-tailed features. Full article

(This article belongs to the Special Issue Heavy-Tail Phenomena in Insurance, Finance, and Other Related Fields)

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