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Robust and Practical Estimation for Measures of Tail Risk
Homescu, Cristian - 2014
We describe characteristics of various risk measures (Value-at-Risk, Expected Shortfall, etc.) that are used to analyze … and quantify the tail risk exposure, and discuss their relative strengths and weaknesses. Emphasis is placed on presenting … and comparing methodologies to compute and backtest estimates for these risk measures, from a practical perspective. We …
Persistent link: https://www.econbiz.de/10013053188
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The Effect of Model-Selection Uncertainty on Autoregressive Models Estimates
Azzam, Islam - 2011
Model-selection uncertainty corresponds to the uncertainty about the true lag order of the autoregressive process that should be picked. This paper shows that all model-selection criteria perform poorly in small samples. Model-selection uncertainty adds to the bias and variability in the...
Persistent link: https://www.econbiz.de/10014178863
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Adaptive pointwise estimation in time-inhomogeneous time-series models
Čížek, Pavel (contributor); Härdle, Wolfgang (contributor) - 2008
This paper offers a new method for estimation and forecasting of the linear and nonlinear time series when the stationarity assumption is violated. Our general local parametric approach particularly applies to general varying-coefficient parametric models, such as AR or GARCH, whose coefficients...
Persistent link: https://www.econbiz.de/10003635965
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Estimation of nonparametric conditional moment models with possibly nonsmooth moments
Chen, Xiaohong (contributor); Pouzo, Demian (contributor) - 2008
This paper studies nonparametric estimation of conditional moment models in which the residual functions could be nonsmooth with respect to the unknown functions of endogenous variables. It is a problem of nonparametric nonlinear instrumental variables (IV) estimation, and a difficult nonlinear...
Persistent link: https://www.econbiz.de/10003739667
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Sequential estimation of structural models with a fixed point constraint
Kasahara, Hiroyuki (contributor);  … - 2008
This paper considers the estimation problem of structural models for which empirical restrictions are characterized by a fixed point constraint, such as structural dynamic discrete choice models or models of dynamic games. We analyze the conditions under which the nested pseudo-likelihood (NPL)...
Persistent link: https://www.econbiz.de/10003782944
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Optimal smoothing for a computationally and statistically efficient single index estimator
Xia, Yingcun; Härdle, Wolfgang; Linton, Oliver - 2009
In semiparametric models it is a common approach to under-smooth the nonparametric functions in order that estimators of the finite dimensional parameters can achieve root-n consistency. The requirement of under-smoothing may result as we show from inefficient estimation methods or technical...
Persistent link: https://www.econbiz.de/10003835181
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Sequential estimation of structural models with a fixed point constraint
Kasahara, Hiroyuki; Shimotsu, Katsumi - 2008
This paper considers the estimation problem of structural models for which empirical restrictions are characterized by a fixed point constraint, such as structural dynamic discrete choice models or models of dynamic games. We analyze the conditions under which the nested pseudo-likelihood (NPL)...
Persistent link: https://www.econbiz.de/10003805996
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A martingale representation for matching estimators
Abadie, Alberto; Imbens, Guido - 2009
Matching estimators are widely used in statistical data analysis. However, the distribution of matching estimators has … matching estimators. This representation allows the use of martingale limit theorems to derive the asymptotic distribution of … matching estimators. As an illustration of the applicability of the theory, we derive the asymptotic distribution of a matching …
Persistent link: https://www.econbiz.de/10003826104
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Nonparametric estimation of a polarization measure
Anderson, Gordon; Linton, Oliver; Whang, Yoon-jae - 2009
Anderson, Ge, and Leo (2006) based on kernel estimation techniques. We give the asymptotic distribution theory of our estimator … on estimation of unknown quantities in the limiting distribution and show that our method yields consistent inference in …
Persistent link: https://www.econbiz.de/10003847572
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Generalized single-index models : the EFM approach
Cui, Xia; Härdle, Wolfgang; Zhu, Lixing - 2009
Generalized single-index models are natural extensions of linear models and circumvent the so-called curse of dimensionality. They are becoming increasingly popular in many scientific fields including biostatistics, medicine, economics and financial econometrics. Estimating and testing the model...
Persistent link: https://www.econbiz.de/10003893146