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A comparison of five robust regression methods with ordinary least squares: relative efficiency, bias and test of the null hypothesis
Anderson, Cynthia - 2001
A Monte Carlo simulation was used to generate data for a comparison of five robust regression estimation methods with ordinary least squares (OLS) under 36 different outlier data configurations. Two of the robust estimators, Least Absolute Value (LAV) estimation and MM estimation, are...
Persistent link: https://www.econbiz.de/10009475082
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Adaptive weighting for flexible estimation in nonparametric regression models.
Nosedal-Sanchez, Alvaro - 2011
cross validation) p smoothing parameters. Theory fromCOmponent Selection and Shrinkage Operator (COSSO), reduces the problem …
Persistent link: https://www.econbiz.de/10009429662
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Simulating Statistical Power Curves with the Bootstrap and Robust Estimation
Herrington, Richard S. - 2001
to power planning (Cohen, 1988) usually focus on normal theory settings and in general do not make available … that: 1) bootstrap confidence intervals using Mestimators gave shorter confidence intervals than the normal theory … normal theory counterpart when the data had heavy tailed distributions; 3) the smoothed bootstrap controls type I error rate …
Persistent link: https://www.econbiz.de/10009475066
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A Representation of Partially Ordered Preferences
Seidenfeld, Teddy; Schervish, Mark J.; Kadane, Joseph B. - 1995
, de Finetti, Savage and Anscombe and Aumann in giving axioms for a theory of robust preferences. We establish that …
Persistent link: https://www.econbiz.de/10009441010
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Demographic and economic trends in medical schemes--a time series analysis [Demografiese en ekonomiese tendense vir mediese skemas--'n tydreeksanalise.]
Hartshorne J.E.; Carstens I.L. - 1991
A time series analysis was performed on medical scheme statistics with the aim of determining current and future demographic and economic trends. This would enable one to reach a better perspective on the current and future financial dilemma presently experienced by medical schemes. Data for the...
Persistent link: https://www.econbiz.de/10009480497
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Insolvenzprognose für ukrainische, deutsche sowie nordamerikanische Unternehmen
Perederiy, Volodymyr - 2010
Das vorliegende Dissertationsprojekt hatte zwei zentrale Schwerpunkte. Den ersten Schwerpunkt bildete die innovative Insolvenzprognosemodellierung für ukrainische Unternehmen.Dafür wurde im Wesentlichen die moderne internationale Standardmethodik zur Insolvenzprognose auf Basis der...
Persistent link: https://www.econbiz.de/10009460748
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Internationaler intra- und interindustrieller Handel zwischen ungleichen Partnern. Empirischer Test eines Neo-Heckscher-Ohlin-Modells am Beispiel des Außenhandels Bulgariens mit de...
Pietschner, Margreta Stoyanova - 2001
The dissertation aims at verifying the hypotheses derived within a model of international trade theory of the New …
Persistent link: https://www.econbiz.de/10009471913
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Indirect Estimation of Linear Models with Ordinal Regressors. A Monte Carlo Study and some Empirical Illustrations.
Kukuk, Martin - 1998
This paper investigates the effects of ordinal regressors in linear regression models. Each ordered categorical variable is interpreted as a rough measurement of an underlying continuous variable as it is often done in microeconometrics for the dependent variable. It is shown that using ordinal...
Persistent link: https://www.econbiz.de/10009475350
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Data Mining: Modellierung, Methodik und durchführung ausgewählter Fallstudien mit dem SAS Enterprise Miner
Gottermeier, Christian - 2003
Die Arbeit beschreibt die Methodiken des Data Mining. Im Fokus steht hierbei die Modellierung der Verfahren KNN, Entscheidungsbaum und Regression. Bei der Durchführung von Fallstudien wird u.a. auf das Pre-Processing eingegangen.
Persistent link: https://www.econbiz.de/10009476220
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Performance-Studie deutscher Familienunternehmen
Leiber, Marietta Kersten - 2008
differenziert. Als theoretische Grundlage dient die Prinzipal-Agenten-Theorie; verschiedene Agency-Konflikte insbesondere zwischen …. Theoretical considerations are based on principal-agent theory. The diverse potential agency conflicts in family vs. non …
Persistent link: https://www.econbiz.de/10009482315