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Dynamic Time Warping Algorithm in Modeling Systemic Risk in the European Insurance Sector

open access: yesEntropy, 2021
We are looking for tools to identify, model, and measure systemic risk in the insurance sector. To this aim, we investigated the possibilities of using the Dynamic Time Warping (DTW) algorithm in two ways.
Anna Denkowska, Stanisław Wanat
doaj   +1 more source

A Locally Both Leptokurtic and Fat-Tailed Distribution with Application in a Bayesian Stochastic Volatility Model

open access: yesEntropy, 2021
In the paper, we begin with introducing a novel scale mixture of normal distribution such that its leptokurticity and fat-tailedness are only local, with this “locality” being separately controlled by two censoring parameters.
Łukasz Lenart   +2 more
doaj   +1 more source

New Estimators of the Bayes Factor for Models with High-Dimensional Parameter and/or Latent Variable Spaces

open access: yesEntropy, 2021
Formal Bayesian comparison of two competing models, based on the posterior odds ratio, amounts to estimation of the Bayes factor, which is equal to the ratio of respective two marginal data density values.
Anna Pajor
doaj   +1 more source

Can Producers’ Price War End Up in an Optimal Allocation?

open access: yesMathematics, 2022
The paper presents a theoretical framework for the phenomenon of the price war in the context of general equilibrium, with special attention to the production system.
Marta Kornafel
doaj   +1 more source

Optimal consumption problem in the Vasicek model [PDF]

open access: yesOpuscula Mathematica, 2015
We consider the problem of an optimal consumption strategy on the infinite time horizon based on the hyperbolic absolute risk aversion utility when the interest rate is an Ornstein-Uhlenbeck process.
Jakub Trybuła
doaj   +1 more source

Contractive and optimal sets in Musielak-Orlicz spaces with a smoothness condition [PDF]

open access: yesOpuscula Mathematica, 2013
In this paper we use our recent generalization of a theorem of Jamison-Kamińska-Lewicki (characterizing one-complemented subspaces in Musielak-Orlicz sequence spaces defined by Musielak-Orlicz functions satisfying a general smoothness condition) in order
Anna Denkowska
doaj   +1 more source

A Tail Dependence-Based MST and Their Topological Indicators in Modeling Systemic Risk in the European Insurance Sector

open access: yesRisks, 2020
In the present work, we analyze the dynamics of indirect connections between insurance companies that result from market price channels. In our analysis, we assume that the stock quotations of insurance companies reflect market sentiments, which ...
Anna Denkowska, Stanisław Wanat
doaj   +1 more source

Examining GDP Growth and Its Volatility: An Episodic Approach

open access: yesEntropy, 2021
In this paper, we study economic growth and its volatility from an episodic perspective. We first demonstrate the ability of the genetic algorithm to detect shifts in the volatility and levels of a given time series.
Jakub Bartak   +2 more
doaj   +1 more source

Entropy-Based Measure of Statistical Complexity of a Game Strategy

open access: yesEntropy, 2020
In this note, we introduce excess strategic entropy—an entropy-based measure of complexity of the strategy. It measures complexity and predictability of the (mixed) strategy of a player.
Fryderyk Falniowski
doaj   +1 more source

Developing Digital Economy and Society in the Light of the Issue of Digital Convergence of the Markets in the European Union Countries

open access: yesEnergies, 2021
The main objective of the paper is to present the development of digital economy and society in the Countries of the European Union in the light of the digital convergence of these markets.
Ryszard Borowiecki   +5 more
doaj   +1 more source

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