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Nonparametric Estimation for Non-Homogeneous Semi-Markov Processes: An Application to Credit Risk
Monteiro, Andre; Smirnov, Georgi V.; Lucas, Andre - 2006
We propose procedures for estimating the time-dependent transition matrices for the general class of finite nonhomogeneous continuous-time semi-Markov processes. We prove the existence and uniqueness of solutions for the system of Volterra integral equations defining the transition matrices,...
Persistent link: https://www.econbiz.de/10010325348
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Development and validation of credit-scoring models
Glennon, Dennis; Kiefer, Nicholas M.; Larson, C. Erik; … - 2007
Accurate credit-granting decisions are crucial to the efficiency of the decentralized capital allocation mechanisms in modern market economies. Credit bureaus and many financial institutions have developed and used credit-scoring models to standardize and automate, to the extent possible, credit...
Persistent link: https://www.econbiz.de/10010292074
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An economic capital model integrating credit and interest rate risk in the banking book
Alessandri, Piergiorgio; Drehmann, Mathias - 2009
Banks typically determine their capital levels by separately analysing credit and interest rate risk, but the interaction between the two is significant and potentially complex. We develop an integrated economic capital model for a banking book where all exposures are held to maturity. Our...
Persistent link: https://www.econbiz.de/10011605087
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Parametric inference for index functionals
Guerrier, Stéphane; Orso, Samuel; Victoria-Feser, Maria-Pia - In: Econometrics 6 (2018) 2, pp. 1-11
In this paper, we study the finite sample accuracy of confidence intervals for index functional built via parametric bootstrap, in the case of inequality indices. To estimate the parameters of the assumed parametric data generating distribution, we propose a Generalized Method of Moment...
Persistent link: https://www.econbiz.de/10011995222
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Estimating low sampling frequency risk measure by high-frequency data
Wesselhöfft, Niels; Härdle, Wolfgang Karl - 2019
Weekly, quarterly and yearly risk measures are crucial for risk reporting according to Basel III and Solvency II. For the respective data frequencies, the authors show in a simulation and backtest study that available data series are not sufficient in order to estimate Value at Risk and Expected...
Persistent link: https://www.econbiz.de/10012433217
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Constrained Kelly portfolios under alpha-stable laws
Wesselhöfft, Niels; Härdle, Wolfgang Karl - 2019
This paper provides a detailed framework for modeling portfolios, achieving the highest growth rate under subjective risk constraints such as Value at Risk (VaR) in the presence of stable laws. Although the maximization of the expected logarithm of wealth induces outperforming any other...
Persistent link: https://www.econbiz.de/10012433218
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Testing directional forecast value in the presence of serial correlation
Blaskowitz, Oliver J.; Herwartz, Helmut - 2008
Common approaches to test for the economic value of directional forecasts are based on the classical Chi-square test for independence, Fisher’s exact test or the Pesaran and Timmerman (1992) test for market timing. These tests are asymptotically valid for serially independent observations....
Persistent link: https://www.econbiz.de/10010271838
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Virtual center for the paradigmatic studies
Krupa, Tadeusz - In: Foundations of Management 12 (2020) 1, pp. 181-192
The Virtual Center for Paradigmatic Studies is a serious profession and, at the same time, a beneficial offer addressed to people who treat the process of their education and professional development both at home and in the academic environment as a unique life opportunity. This article presents...
Persistent link: https://www.econbiz.de/10012601103
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Recent Developments in Financial Economics and Econometrics: An Overview
Chang, Chia-Lin; Allen, David; McAleer, Michael - 2013
Research papers in empirical finance and financial econometrics are among the most widely cited, downloaded and viewed articles in the discipline of Finance. The special issue presents several papers by leading scholars in the field on “Recent Developments in Financial Economics and...
Persistent link: https://www.econbiz.de/10010326212
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Outliers in semi-parametric estimation of treatment effects
Ontiveros, Darwin Ugarte; Canavire-Bacarreza, Gustavo; … - 2017
Average treatment effects estimands can present significant bias under the presence of outliers. Moreover, outliers can … outliers. Bad and good leverage points outliers are considered. The bias arises because bad leverage points completely change … the propensity score. We provide some clues to diagnose the presence of outliers and propose a reweighting estimator that …
Persistent link: https://www.econbiz.de/10011817589