Symposium in Memory of Fritz Leisch

The Institute of Statistics is organizing a Symposium in honor of our late head of Institute, supervisor, colleague and friend Friedrich "Fritz" Leisch who passed away in April 2024 after a serious illness.

We invite colleagues and fellow researchers to share scientific research contributions on topics in statistics and computing Fritz has contributed to such as for example clustering and mixture models or literate programming and reproducible research.

During the symposium we will present the first Fritz Leisch Award winner.

Thursday 24^th to Friday 25^th of April 2025

BOKU University, Türkenschanze,
Peter-Jordan-Str. 82, Ilse Wallentin Building,
Seminar Room EG-01/02

Day 1 (Thu April 24^th)

10:00 - 10:30 Registration 

10:30 - 12:30 BOKU Collaborations

• Gerald Striedner
• Karolina Taczanowska:
  Lobbying in social media as a new source of survey bias
• Rafaela Schinegger:
  Mentoring and contributions of Fritz Leisch in the fields of aquatic ecosystem and conservation sciences
• Reinhard Hössinger with  Simona Jokubauskaite:
  A discrete-continuous model for the joint estimation of time use, expenditure allocation, and travel mode choice

12:30 - 13:30 Lunch

13:30 - 15:00 External Collaborations

• Harald Aschauer:
  Mind and Genes
• Göran Kauermann:
  Mixture Models revisited for Quantifying Uncertainty in Machine Learning
• Helmut Küchenhoff:
  Clusteranalysis in practice- EU energy pathways and tourism behaviour
• Sara Dolnicar:
  Friedrich Leisch’s contributions to market segmentation analysis
• Di Cook:
  Interactively Visualizing Multivariate Market Segmentation Using the R Package Lionfish

15:00 - 15:30 Coffee Break

15:30 - 17:00 Cluster Analysis

• Kurt Hornik:
  circlus: An R Package for Circular and Spherical Clustering using PKBD and Spherical Cauchy Distributions
• Bettina Grün:
  Ordinal Clustering with the flex-Scheme
• Sylvia Frühwirth-Schnatter
• Christian Hennig:
  The role of data visualisation in cluster analysis

18:00 Conference Dinner, Meierei Diglas

Day 2 (Fri April 25^th)

09:00 - 10:30 Computational Statistics

• Matthias Templ:
  Open Research Data and Reproducibility through Data Synthesis: Problems and Opportunities
• Peter Filzmoser:
  Cell-wise robustness for sparse PCA
• Hans Kessler
• Fritz Leisch Award 

10:30 - 11:00 Coffee Break

11:00 - 12:30 Statistical Computing & Reproducibility

• Robert Gentleman: 
  Contributions of Fritz Leisch to Vignettes and Reproducible Research
• Torsten Hothorn: 
  Did We Practice What We Preached?
• Achim Zeileis: 
  Examining Exams Using Rasch Models and Assessment of Measurement Invariance
• Carolin Strobl: 
  Against the “one method fits all data sets” philosophy for comparison studies in methodological research

12:30 Closing and Lunch