Siegel der Universität Augsburg

Universität Augsburg
Institut für Mathematik

Siegel der Universität Augsburg

 

Oberseminar Datenanalyse und Statistik

 

Professorin Dr. Bettina Grün
Johannes Kepler Universität Linz

 
spricht am
 
Freitag, 24. Oktober 2014
 
um
 
10 Uhr s.t.
 
im
 
Raum 2004 (L1)
 
über das Thema:
 

»Flexible and Sparse Bayesian Model-Based Clustering«

Abstract:
Finite mixtures of multivariate normal distributions constitute a standard tool for clustering multivariate observations. However, selecting the suitable number of clusters, identifying cluster-relevant variables as well as accounting for non-normal shapes of the clusters are still challenging issues in applications. Within a Bayesian framework we indicate how suitable prior choices can help to solve these issues. We achieve this considering only prior distributions that have the characteristics that they are conditionally conjugate or can be reformulated as hierarchical priors, thus allowing for simple estimation using MCMC methods with data augmentation.

 

Hierzu ergeht herzliche Einladung.
Prof. A. Unwin



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