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Publications

2017

  • M. Muenchhoff, E. Adland, O. Karimanzira, C. Crowther, M. Pace, A. Csala, E. Leitman, A. Moonsamy, C. McGregor, J. Hurst, A. Groll, M. Mori, S. Sinmyee, C. Thobakgale, G. Tudor-Williams, A. J. Prendergast, H. Kloverpris, J. Roider, A. Leslie, D. Shingadia, T. Brits, S. Daniels, J. Frater, C. B. Willberg, B. D. Walker, T. , P. Jooste, P. L. Moore, L. Morris and P. Goulder. Nonprogressing HIV-infected children share fundamental immunological features of nonpathogenic SIV infection. Science Translational Medicine, vol. 8 no. 358, pages 358ra125-358ra125, 2017. [DOI]
  • A. Groll, T. Kneib, A. Mayr and G. Schauberger. On the Dependency of Soccer Scores - A Sparse Bivariate Poisson Model for the UEFA European Football Championship 2016. Proceedings of MathSport International 2017 Conference, pages 161-175, 2017.
  • A. Groll, T. Kneib and N. Umlauf. LASSO-type penalization in the framework of Generalized Additive Models for Location, Scale and Shape. Proceedings of the 32th International Workshop on Statistical Modelling, vol. 1, pages 103-108, 2017.
  • G. Schauberger, A. Groll and G. Tutz. Analysis of the importance of on-field covariates in the German Bundesliga. Journal of Applied Statistics, 2017. [DOI]
  • A. Groll. glmmLasso: Variable Selection for generalized linear mixed models by L$_1$-penalized estimation, 2017. R package version 1.5.1.
  • V.-B. Pucken, G. Knubben-Schweizer, A. Groll, R. K. Straubinger, P. Zimmermann, S. Hörmansdorfer, A. Hafner-Marx, D. Döpfer, C. Sauter-Louis and S. Hartnack. Evaluating Diagnostic Tests for Bovine Tuberculosis in the Southern Part of Germany: A Latent Class Analysis. PloS One, vol. 12 no. 6, pages 1-17, 2017. [DOI]
  • A. Groll and G. Tutz. Variable Selection in Discrete Survival Models Including Heterogeneity. Lifetime Data Analysis, vol. 23 no. 2, pages 305-338, 2017. [DOI]
  • A. D. Meid, A. Groll, U. Schieborr, J. Walker and W. E. Haefeli. How can we define and analyse drug exposure more precisely to improve the prediction of hospitalizations in longitudinal (claims) data?. European Journal of Clinical Pharmacology, pages 373-380, 2017. [DOI]
  • M. Muenchhoff, M. Healy, S. Ravesh, J. Roider, A. Groll, C. Kindra, T. Sibaya, A. Moonsamy, C. McGregor, M. Q. Phan, A. Palma, H. Kloverpris, A. Leslie, R. Bobat, P. LaRussa, T. Ndung'u, P. Goulder, M. E. Sobieszczyk and M. Archary. Malnutrition in HIV-infected children is an indicator of severe disease with an impaired response to antiretroviral therapy. AIDS Research and Human Retroviruses, 2017. [DOI]
  • Andreas Groll, Trevor Hastie and Gerhard Tutz. Selection of effects in Cox frailty models by regularization methods. Biometrics, vol. 73 no. 3, pages 846-856, 2017. [DOI]

2016

  • G. Schauberger, A. Groll and G. Tutz. Subject-Object-Specific Covariates in Paired Comparison Models - An Application to Data from the German Bundesliga. Proceedings of the 31th International Workshop on Statistical Modelling, vol. 1, pages 285-290, 2016.
  • A. Groll, J. Abedieh and M. J. A. Eugster. Modeling Concentration in Data with an Exogenous Order. Proceedings of the 31th International Workshop on Statistical Modelling, vol. 2, pages 49-54, 2016.
  • A. Groll, B. Lopez-Cabrera and T. Meyer-Brandis. A consistent two-factor model for pricing temperature derivatives. Energy Economics, vol. 55, pages 112-126, 2016. [DOI]
  • F. Biagini, A. Groll and J. Widenmann. Risk Minimization for Insurance Products via F-Doubly Stochastic Markov Chains. Risks, vol. 4 no. 3, page 23, 2016. [DOI]
  • A. Meid, R. Quinzler, J. Freigofas, A. Groll, K.-U. Saum, B. , H. Brenner, D. Heider, H.-H. , B. Wild and W. E. Haefeli. Longitudinal evaluation of medication underuse in older outpatients and its association with quality of life. European Journal of Clinical Pharmacology, vol. 72 no. 7, pages 877-885, 2016. [DOI]
  • A. Groll and J. Abedieh. Employment and Fertility - A Comparison of the Family Survey 2000 and the Pairfam Panel. In Raimondo Manca, Sally McClean and Christos H Skiadas, editors, New Trends in Stochastic Modeling and Data Analysis. ISAST, 2016. to appear.
  • A. Groll, T. Kneib, A. Mayr and G. Schauberger. . Technical Report 195, Ludwig-Maximilians-University, 2016.
  • A. Groll. PenCoxFrail: Regularization in Cox Frailty Models, 2016. R package version 1.0.0.

2015

  • A. Groll, T. Hastie and G. Tutz. Regularization in Cox Frailty Models. Proceedings of the 30th International Workshop on Statistical Modelling, vol. Volume 1, pages 198-203, 2015.

2014

  • A. Groll and G. Tutz. Variable Selection for Generalized Linear Mixed Models by L1-Penalized Estimation. Statistics and Computing, vol. 24 no. 2, pages 137-154, 2014. [DOI]
  • A. Groll and J. Abedieh. A Study on European Football Championships in the GLMM Framework with an Emphasis on UEFA Champions League Experience. In J. R. Bozeman, V. Girardin and C. H. Skiadas, editors, New perspectives on stochastic modeling and data analysis,, pages 313-321. ISAST, 2014.

2013

  • A. Groll. GMMBoost: Componentwise likelihood-based boosting approaches to generalized mixed models, 2013. R package version 1.1.2.
  • A. Groll and J. Abedieh. Spain retains its title and sets a new record - generalized linear mixed models on European football championships. Journal of Quantitative Analysis in Sports, vol. 9 no. 1, pages 51-66, 2013. [DOI]
  • F. Biagini, A. Groll and J. Widenmann. Intensity-based premium evaluation for unemployment insurance products. Insurance: Mathematics and Economics, vol. 53, pages 302-316, 2013. [DOI]
  • J. Abedieh, A. Groll and M. J. A. Eugster. Measuring Concentration in Data with an Exogenous Order. Technical Report 140, Ludwig-Maximilians-University, 2013.
  • G. Tutz and A. Groll. Likelihood-based Boosting in Binary and Ordinal Random Effects Models. Journal of Computational and Graphical Statistics, vol. 22 no. 2, pages 356-378, 2013. [DOI]

2012

  • A. Groll and G. Tutz. Regularization for Generalized Additive Mixed Models by Likelihood-based Boosting. Methods of Information in Medicine, vol. 51 no. 2, pages 168-177, 2012. [DOI]

2011

  • A. Groll and G. Tutz. Variable selection for generalized additive mixed models by likelihood-based boosting. In Organizing Commitee, editors, Proceedings ASMDA 2011. Sapienza Università di Roma, 2011.
  • A. Groll. Variable selection by regularization methods for generalized mixed models. PhD thesis, University of Munich, Göttingen, 2011. Cuvillier Verlag.

2010

  • G. Tutz and A. Groll. Generalized Linear Mixed Models Based on Boosting. In T. Kneib and G. Tutz, editors, Statistical Modelling and Regression Structures - Festschrift in the Honour of Ludwig Fahrmeir. Physica, 2010.