Kopfbild AG Bioimaging
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Research Interests


  • Scalar-on-Image Regression
  • Functional Data Analysis:
    • Multivariate Functional Principal Component Analysis
    • Identifiability in Scalar-on-Functions - Regression
  • Spatial Statistics
  • Statistical Methods for Medical Images



  • Theses

      Happ C (2013, Master Thesis): Identifiability in Scalar-on-Functions Regression.



    Publications / Preprints

      Happ C (2018): Object-Oriented Software for Functional Data. Submitted. arXiv.
      Happ C, Scheipl F, Gabriel A-A, Greven S (2018): A General Framework for Multivariate Functional Principal Component Analysis of Amplitude and Phase Variation. Submitted. arXiv.



    Talks

      Identifiability and Multicollinearity in Scalar-on-Functions Regression
      Doktorandentreffen Stochastik 2014, 06.-08. August 2014, Halle (Saale), Germany
      Identifiability and Multicollinearity in Scalar-on-Functions Regression
      20. DStatG Nachwuchsworkshop, 15.-16. September 2014, Hannover, Germany
      Multivariate Functional Principal Component Analysis for Data Observed on Different (Dimensional) Domains
      CMStatistics 2015, 12.-14. December 2015, London, United Kingdom
      Multivariate Functional Principal Component Analysis for Data Observed on Different (Dimensional) Domains
      DAGStat 2016, 14.-18. March 2016, Göttingen, Germany
      Multivariate Functional Principal Component Analysis for Data Observed on Different (Dimensional) Domains
      JSM 2016, 31. July - 04. August 2016, Chicago, USA
      David P. Byar Young Investigator Award awarded by the Biometrics Section of the American Statistical Association (ASA)
      Multivariate Functional Principal Component Analysis for Data Observed on Different (Dimensional) Domains
      COMPSTAT 2016, 23. - 26. August 2016, Oviedo, Spain
      Two R-Packages for Object-Oriented Functional Data Analysis
      COMPSTAT 2016, Satellite Workshop and Summer Course on Functional Data Analysis, 26 - 28. August 2016, Oviedo, Spain
      Travel grant for PhD students and Early Career Investigators
      Multivariate Functional Principal Component Analysis for Data Observed on Different (Dimensional) Domains
      IBS Channel Network Conference, 24. - 26. April 2017, Hasselt, Belgium
      Invited Talk
      Multivariate Functional Principal Component Analysis for Data Observed on Different (Dimensional) Domains
      CEN ISBS 2017, 28. August - 01. September 2017, Vienna, Austria
      Gustav-Adolf-Lienert-Preis of the International Biometric Society, German Region
      Identifiability and multicollinearity in scalar-on-functions regression
      CMStatistics 2017, 16.-18. December 2017, London, United Kingdom
      Invited Talk
      Multivariate Functional Principal Component Analysis for Data Observed on Different (Dimensional) Domains
      IMS Annual Meeting on Probability and Statistics, 02.-06. July 2018, Vilnius, Lithuania
      Invited Talk

    Posters

      A Fully Bayesian Hierarchical Model for Scalar-on-Image Regression
      Bayesian Biostatistics 2014, 02.-04. Juli 2014, Zurich, Switzerland



    Software

      R-package funData: An S4 class for functional data.
      Natural representation and basic functionality (print, plot, arithmetics, simulation, ...) for univariate and multivariate functional data. Supports multivariate functional data on different dimensional domains.
      R-package MFPCA: Multivariate Functional Pricipal Component Analysis for Data Observed on Different (Dimensional) Domains.
      Calculate a PCA for multivariate functional data on different domains, that may also differ in dimension. The package is based on funData (see above) and implements various univariate bases for functional data on up to three-dimensional domains.



    Refereeing

      Biometrics, European Journal of Operational Research, Journal of Statistical Planning and Inference, Statistica Sinica
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