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

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

During the symposium the first Fritz Leisch Award winners were presented.

Thursday 24th to Friday 25th of April 2025

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

Day 1 (Thu April 24th)

10:00 - 10:30 Registration 

10:30 - 12:30 BOKU Collaborations

  • Verena Scherfranz:
    Using a perception matrix to elicit farmer's perceptions towards stakeholders in the context of biodiversity-friendly farming
  • Gerald Striedner:
    Statistics in bioprocess modeling
  • Karolina Taczanowska:
    Outdoor recreation research - advices from Friedrich Leisch
  • 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 - 15:15 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

15:15 - 15:45 Coffee Break

15:45 - 17:15 Cluster Analysis

18:00 Conference Dinner, Meierei Diglas

Day 2 (Fri April 25th)

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
  • In memory of Fritz Leisch
  • 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
 

Poster Contributions

  • Gertraud Malsiner-Walli (WU Wien): Capturing Correlated Clusters Using Mixtures of Latent Class Models
  • Fabian Pelzmann (BOKU University): Wohnstandortpräferenzen nach dem Studium
  • Anita Metzinger (BOKU University): Analysis of Uremic Gastropathy in Captive Non-Domestic Felids with Chronic Kidney Disease: Highlighting Wildlife Management Challenges
  • Caroline Ehrendorfer (BOKU University): Estimation of extreme flood discharge values with synthetic weather data in the Austrian Alps
  • Rebecca Rau (BOKU University): Timing of Fledging and Post-Fledging Survival Probability in Barn Owls (Tyto alba)
  • Pia Reschberger-Kummer (BOKU University): Blütenbesucher in den Staudenbeeten der Großstadt Wien
  • Farhana Sweeta Fitriana (BOKU University): Non-stationary low-flow frequency analysis with Mixture Weibull distribution – Copula based framework
  • Fatemeh Firoozi (BOKU University): Low flow frequency analyses: A new approach integrating seasonality and multivariate characteristics of drought