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Inference on the maximal rank of time-varying covariance matrices using high-frequency data
Reiß, Markus; Winkelmann, Lars - 2021
We study the rank of the instantaneous or spot covariance matrix Σ(t) of a multidimensional continuous semi-martingale X(t). Given highfrequency observations X(i=n), i = 0; : : : ;n, we test the null hypothesis rank (Σ(t)) ≤ r for all t against local alternatives where the average (r + 1)st...
Persistent link: https://www.econbiz.de/10012655380
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Robust small area estimation under spatial non-stationarity
Baldermann, Claudia; Salvati, Nicola; Schmid, Timo - 2016
Geographically weighted small area methods have been studied in literature for small area estimation. Although these approaches are useful for the estimation of small area means efficiently under strict parametric assumptions, they can be very sensitive to outliers in the data. In this paper, we...
Persistent link: https://www.econbiz.de/10011455039
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A random forest-based approach to identifying the most informative seasonality tests
Ollech, Daniel; Webel, Karsten - 2020
Virtually each seasonal adjustment software includes an ensemble of seasonality tests for assessing whether a given time series is in fact a candidate for seasonal adjustment. However, such tests are certain to produce either the same resultor conflicting results, raising the question if there...
Persistent link: https://www.econbiz.de/10012301212
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Robust inference intime-varying structural VAR models : the DC-Cholesky multivariate stochasticvolatility model
Hartwig, Benny - 2020
indicate that conclusions may critically hinge on a selectedordering of variables. The dynamic correlation Cholesky …
Persistent link: https://www.econbiz.de/10012250452
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Outlier robust small area estimation under spatial correlation
Schmid, Timo; Tzavidis, Nikos; Münnich, Ralf T.; … - 2015
propose outlier robust small area methodology that allows for the presence of spatial correlation in the data. In particular …
Persistent link: https://www.econbiz.de/10010486950
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On the relationship between cognitive ability and risk preference
Dohmen, Thomas; Falk, Armin; Huffman, David; Sunde, Uwe - 2018
This paper focuses on the relationship between cognitive ability and decision making under risk and uncertainty. We begin by clarifying some important distinctions between concepts and measurement of risk preference and cognitive ability and then take stock of what is known empirically on the...
Persistent link: https://www.econbiz.de/10011899243
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Estimates of the effect of wages on job satisfaction
Lydon, Reamonn (contributor); Chevalier, Arnaud (contributor) - 2002 - [Elektronische Ressource]
Persistent link: https://www.econbiz.de/10001723463
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Identifying time variability in stock and interest rate dependence
Stein, Michael; Islami, Mevlud; Lindemann, Jens - 2012
The correlation between stock markets and interest rates has been discussed in numerous studies in the past, with … which allow for time-variability and regime changes in correlation. All estimated models allowing for timevarying … correlation complement each other in identifying time-varying patterns found in the (co-)movement between the variables …
Persistent link: https://www.econbiz.de/10009625556
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Do correlated defaults matter for CDS premia? : an empirical analysis
Koziol, Christian; Koziol, Philipp; Schön, Thomas - 2014
Correlated defaults and systemic risk are clearly priced in credit portfolio securities such as CDOs or index CDSs. In this paper we study an extensive CDX data set for evidence whether correlated defaults are also present in the underlying CDS market. We develop a cash flow based top-down...
Persistent link: https://www.econbiz.de/10010405475
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Analyzing business and financial cycles using multi-level factor models
Breitung, Jörg; Eickmeier, Sandra - 2014
This paper compares alternative estimation procedures for multi-level factor models which imply blocks of zero restrictions on the associated matrix of factor loadings. We suggest a sequential least squares algorithm for minimizing the total sum of squared residuals and a two-step approach based...
Persistent link: https://www.econbiz.de/10010373684