An Entropy-Based Test and Development Framework for Uncertainty Modeling in Level-Set Visualizations

• URL: http://arxiv.org/abs/2409.08445v1
• Date: Fri, 13 Sep 2024 00:31:16 GMT
• Title: An Entropy-Based Test and Development Framework for Uncertainty Modeling in Level-Set Visualizations
• Authors: Robert Sisneros, Tushar M. Athawale, David Pugmire, Kenneth Moreland,
• Abstract summary: We use an entropy calculation directly on ensemble data to establish an expected result. We show that fewer bins in nonparametric histogram models are more effective whereas large numbers of bins in quantile models approach data accuracy.
• Score: 2.5449631655313896
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We present a simple comparative framework for testing and developing uncertainty modeling in uncertain marching cubes implementations. The selection of a model to represent the probability distribution of uncertain values directly influences the memory use, run time, and accuracy of an uncertainty visualization algorithm. We use an entropy calculation directly on ensemble data to establish an expected result and then compare the entropy from various probability models, including uniform, Gaussian, histogram, and quantile models. Our results verify that models matching the distribution of the ensemble indeed match the entropy. We further show that fewer bins in nonparametric histogram models are more effective whereas large numbers of bins in quantile models approach data accuracy.

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