Department of Economics

Simon M. S. Lo; Shuolin Shi; Ralf Wilke / A Copula Duration Model with Dependent States and Spells
In: Computational Statistics & Data Analysis, Vol. 204, 4.2025

Simon M. S. Lo; Ralf Wilke; Takeshi Emura / A Semiparametric Model for the Cause-specific Hazard Under Risk Proportionality
In: Computational Statistics & Data Analysis, Vol. 195, 7.2024

Simon M. S. Lo; Ralf Wilke / A Single Risk Approach to the Semiparametric Competing Risks Model With Parametric Archimedean Risk Dependence
In: Journal of Multivariate Analysis, Vol. 201, 5.2024

Simon M. S. Lo; Ralf A. Wilke / A Parametric Competing Risks Regression Model with Unknown Dependent Censoring
In: Journal of the Royal Statistical Society, Series C (Applied Statistics), Vol. 72, No. 4, 8.2023, p. 1079–1093

Enno Mammen; Ralf Wilke; Kristina Zapp / Estimation of Group Structures in Panel Models with Individual Fixed Effects
Mannheim : Leibnitz Centre for European Economic Research (ZEW) 2022, 57 p. (ZEW Discussion Papers, No. 22-023)

Cäcilia Lipowski; Ralf Wilke; Bertrand Koebel / Fertility, Economic Incentives and Individual Heterogeneity : Register Data‐based Evidence from France and Germany.
In: Journal of the Royal Statistical Society, Series A (Statistics in Society), Vol. 185, No. Supplement 2, 12.2022, p. S515-S546

Shuolin Shi; Ralf A. Wilke / Variable Selection with Group Structure : Exiting Employment at Retirement Age - A Competing Risks Quantile Regression Analysis.
In: Empirical Economics, Vol. 62, No. 1, 1.2022, p. 119-155

Cäcilia Lipowski; Simon M. S. Lo; Shuolin Shi; Ralf A. Wilke / Competing Risks Regression with Dependent Multiple Spells : Monte Carlo Evidence and an Application to Maternity Leave.
In: Japanese Journal of Statistics and Data Science, Vol. 4, No. 2, 12.2021, p. 953-981

Simon M. S. Lo; Enno Mammen; Ralf Wilke / A Nested Copula Duration Model for Competing Risks with Multiple Spells
In: Computational Statistics & Data Analysis, Vol. 150, 10.2020

Takeshi Emura; Jia-Han Shih; Il Do Ha; Ralf Wilke / Comparison of the Marginal Hazard Model and the Sub-distribution Hazard Model for Competing Risks under an Assumed Copula
In: Statistical Methods in Medical Research, Vol. 29, No. 8, 8.2020, p. 2307-2327

Cäcilia Lipowski; Ralf A. Wilke; Bertrand Koebel / Exploring the Puzzle of Human Reproduction : Register Data Based Evidence from France and Germany.
Mannheim : Leibnitz Centre for European Economic Research (ZEW) 2020, 60 p. (ZEW Discussion Papers, No. 20-025)

Yin‐Chen Wang; Takeshi Emura; Tsai‐Hung Fan; Simon M.S. Lo; Ralf Wilke / Likelihood‐based Inference for a Frailty‐copula Model Based on Competing Risks Failure Time Data
In: Quality and Reliability Engineering International, Vol. 36, No. 5, 7.2020, p. 1622-1638

Shihan Du; Pia Homrighausen; Ralf Wilke / On Omitted Variables, Proxies and Unobserved Effects in Analysis of Administrative Labour Market Data
In: Symposium i anvendt statistik: 28.-30. januar 2019. . ed. /Peter Linde. København : Økonomisk Institut, Københavns Universitet og Det Nationale Forskningscenter for Arbejdsmiljø 2019, 1 p., p. 1

Ralf Wilke / Forecasting Macroeconomic Labour Market Flows : What Can We Learn from Micro-level Analysis?.
In: Oxford Bulletin of Economics and Statistics, Vol. 80, No. 4, 8.2018, p. 822-842

Shihan Du; Pia Homrighausen; Ralf A. Wilke / On Omitted Variables, Proxies and Unobserved Effects in Analysis of Administrative Labour Market Data
Nürnberg : Institute for Employment Research (IAB) 2018, 38 p. (FDZ-Methodenreport, No. 6/2018)

Lutz Dümbgen; Petro Kolesnyk; Ralf Wilke / Bi-log-concave Distribution Functions
In: Journal of Statistical Planning and Inference, Vol. 184, 5.2017, p. 1-17

Simon M. S. Lo; Gesine Stephan; Ralf Wilke / Competing Risks Copula Models for Unemployment Duration : An Application to a German Hartz Reform .
In: Journal of Econometric Methods, Vol. 6, No. 1, 1.2017

Stephan Dlugosz; Simon M. S. Lo; Ralf Wilke / Competing Risks Quantile Regression at Work : In-depth Exploration of the Role of Public Child Support for the Duration of Maternity Leave.
In: Journal of Applied Statistics, Vol. 44, No. 1, 2017, p. 109-122

Stephan Dlugosz; Enno Mammen; Ralf Wilke / Generalized Partially Linear Regression with Misclassified Data and an Application to Labour Market Transitions
In: Computational Statistics & Data Analysis, Vol. 110, 6.2017, p. 145-159

Simon M.S. Lo; Ralf Wilke / Identifiability of the Sign of Covariate Effects in the Competing Risks Model
In: Econometric Theory, Vol. 33, No. 5, 2017, p. 1186-1217

Melanie Arntz; Stephan Dlugosz; Ralf Wilke / The Sorting of Female Careers after First Birth : A Competing Risks Analysis of Maternity Leave Duration.
In: Oxford Bulletin of Economics and Statistics, Vol. 79, No. 5, 2017, p. 689-716

Ralf Wilke / Forecasting Macroeconomic Labour Market Flows : What Can We Learn from Micro Level Analysis.
In: Symposium i anvendt statistik: 25.-27. januar 2016. . ed. /Peter Linde. København : Danmarks Statistik 2016, 1 p., p. 65

Stephan Dlugosz; Enno Mammen; Ralf Wilke / Generalised Partially Linear Regression with Misclassified Data and an Application to Labour Market Transitions
Mannheim : Leibnitz Centre for European Economic Research (ZEW) 2015, 27 p. (ZEW Discussion Papers, No. 15-043)

Bernd Fitzenberger; Ralf Andreas Wilke / Quantile Regression Methods
In: Emerging Trends in the Social and Behavioral Sciences: An Interdisciplinary, Searchable, and Linkable Resource. . ed. /Robert A. Scott ; Stephen M. Kosslyn. Hoboken, N.J. : Wiley 2015

Simon M. S. Lo; Ralf Wilke / A Regression Model for the Copula-Graphic Estimator
In: Journal of Econometric Methods, Vol. 3, No. 1, 2014, p. 21–46

Melanie Arntz; Simon M. S. Lo; Ralf Wilke / Bounds Analysis of Competing Risks : A Non-parametric Evaluation of the Effect of Unemployment Benefits on Migration.
In: Empirical Economics, Vol. 146, No. 1, 2014, p. 199-228

Stephan Dlugosz; Gesine Stephan; Ralf A. Wilke / Fixing the Leak : Unemployment Incidence before and after a Major Reform of Unemployment Benefits in Germany.
In: German Economic Review, Vol. 15, No. 3, 8.2014, p. 329–352

Tomi Kyyrä; Ralf Wilke / On the Reliability of Retrospective Unemployment Information in European Household Panel Data
In: Empirical Economics, Vol. 46, No. 4, 2014, p. 1473-1493

Melanie Arntz; Stephan Dlugosz; Ralf A. Wilke / The Sorting of Female Careers after First Birth : A Competing Risks Analysis of Maternity Leave Duration.
Mannheim : Leibnitz Centre for European Economic Research (ZEW) 2014, 36 p. (ZEW Discussion Papers, No. 14-125)

Melanie Arntz; Ralf A. Wilke / Weather-related Employment Subsidies as a Remedy for Seasonal Unemployment? : Evidence from Germany.
In: LABOUR, Vol. 26, No. 2, 2012, p. 266-286

Laura Wichert; Ralf Wilke / Which Factors Safeguard Employment? : An Analysis with Misclassified German Register Data.
In: Journal of the Royal Statistical Society, Series A (Statistics in Society), Vol. 175, No. 1, 2012, p. 135–151

Ralf Wilke / A Review of Econometric Analysis of Cross Section and Panel Data (2nd ed.) by Wooldridge (Jeffrey M.)
In: Econometrics Journal, Vol. 14, No. 3, 2011, p. B5-B9

Simon M. S. Lo; Ralf Wilke / A Copula Model for Dependent Competing Risks
In: Journal of the Royal Statistical Society, Series C (Applied Statistics), Vol. 59, No. 2, 2010, p. 359–376

Bernd Fitzenberger; Ralf Wilke; Xuan Zhang / Implementing Box-Cox Quantile Regression
In: Econometric Reviews, Vol. 29, No. 2, 2010, p. 158-181

Bernd Fitzenberger; Ralf Wilke / New Insights into Unemployment Duration and Post Unemployment Earnings in Germany
In: Oxford Bulletin of Economics and Statistics, Vol. 72, No. 6, 2010, p. 794-826

Bernd Fitzenberger; Ralf Wilke / Unemployment Durations in West Germany Before and After the Reform of the Unemployment Compensation System during the 1980s
In: German Economic Review, Vol. 11, No. 3, 2010, p. 336–366

Sokbae Lee; Ralf Wilke / Reform of Unemployment Compensation in Germany : A Nonparametric Bounds Analysis Useing Register Data.
In: Journal of Business and Economic Statistics, Vol. 27, No. 2, 2009, p. 176-192

Melanie Arntz; Ralf Wilke / Unemployment Duration in Germany : Individual and Regional Determinants of Local Job Finding, Migration and Subsidized Employment.
In: Regional Studies, Vol. 43, No. 1, 2009, p. 43-61

Thomas Kruppe; Eva Müller; Laura Wichert; Ralf Wilke / On the Definition of Unemployment and its Implementation in Register Data : The Case of Germany.
In: Schmollers Jahrbuch, Vol. 128, No. 3, 2008, p. 461-488

Laura Wichert; Ralf Wilke / Simple Non-parametric Estimators for Unemployment Duration Analysis
In: Journal of the Royal Statistical Society, Series C (Applied Statistics), Vol. 27, No. 1, 2008, p. 117–126

Melanie Arntz; Ralf Wilke / An Application of Cartographic Area Interpolation to German Administrative Data
In: A St A - Advances in Statistical Analysis, Vol. 91, No. 2, 2007, p. 159-180

Eva Müller; Ralf Wilke; Philipp Zahn / Beschäftigung und Arbeitslosigkeit älterer Arbeitnehmer : Eine mikroökonometrische Evaluation der Arbeitslosengeldreform von 1997.
In: Jahrbucher fur Nationalokonomie und Statistik, Vol. 227, No. 1, 2007, p. 65-86

Tomi Kyyrä; Ralf Wilke / Reduction in the Long-term Unemployment of the Elderly : A Success Story from Finland.
In: Journal of the European Economic Association, Vol. 5, No. 1, 2007, p. 154-182

Elke Lüdemann; Ralf Wilke; Xuan Zhang / Censored Quantile Regressions and the Length of Unemployment Periods in West Germany
In: Empirical Economics, Vol. 31, No. 4, 2006, p. 1003-1024

Ralf Wilke / Semi-parametric Estimation of Consumption-based Equivalence Scales : The Case of Germany.
In: Journal of Applied Econometrics, Vol. 21, No. 6, 2006, p. 781–802

Bernd Fitzenberger; Ralf Wilke / Using Quantile Regression for Duration Analysis
In: Allgemeines Statistisches Archiv, Vol. 90, No. 1, 2006, p. 103-118

Ralf Wilke / New Estimates of the Duration and Risk of Unemployment for West-Germany
In: Schmollers Jahrbuch - Zeitschrift fur Wirtschafts und Sozialwissenschaften, Vol. 125, No. 2, 2005, p. 207-237

Ralf Wilke; Martin Biewen / Unemployment Duration and the Length of Entitlement Periods for Unemployment Benefits : Do the IAB Employment Subsample and the German Socio-Economic Panel Yield the Same Results?.
In: Allgemeines Statistisches Archiv, Vol. 89, No. 2, 2005, p. 209-236

Ralf Wilke; Henrik Winterhager / Datenquellen als Voraussetzung für die Evaluationsforschung
In: Hartz-Gesetze: Methodische Ansätze zu einer Evaluierung . . ed. /Tobias Hagen; Alexander Spermann. Baden-Baden : Nomos Verlagsgesellschaft 2004, p. 33-43 (Z E W Wirtschaftsanalysen, Vol. 74)

Ralf Wilke / Eine empirische Analyse von Sanktionen für Arbeitslose in Westdeutschland während der 1980er und 1990er Jahre
In: Zeitschrift für ArbeitsmarktForschung, Vol. 37, No. H. 1, 2004, p. 45-52

Ralf Wilke / The Effect of Aggregation on the Magnitude of Behavioral Heterogeneity
In: Economics Bulletin, Vol. 4, No. 25, 2003, p. 1-8