Statistical Parameter Selection for Clustering Persistence Diagrams
Event Type
Registration Categories
Big Data
Computational Science
Data Analytics
Data Management
Societal Challenges
TimeSunday, 17 November 20192:45pm - 3pm
DescriptionIn urgent decision making applications, ensemble simulations are an important way to determine different outcome scenarios based on currently available data. In this paper, we will analyze the output of ensemble simulations by considering socalled persistence diagrams, which are reduced representations of the original data, motivated by the extraction of topological features. Based on a recently published progressive algorithm for the clustering of persistence diagrams, we determine the optimal number of clusters, and therefore the number of significantly different outcome scenarios, by the minimization of established statistical score functions. Furthermore, we present a proof-of-concept prototype implementation of the statistical selection of the number of clusters and provide the results of an experimental study, where this implementation has been applied to real-world ensemble data sets.
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