Title: Similarity metrics for physical simulation verification and optimization problems

Abstract: Quantification of similarity is a challenging problem for problems involving high dimensional data, especially when the data has a context (such as a physical system) on which the notion of similarity is highly dependent. This talk will cover topics related to the construction, application, and understanding of similarity metrics in the context of computer simulations in the physical sciences. These metrics are used for both validation of simulations against experimentally obtained data, and as distance functions for use in optimization problems in which the simulation plays the role of objective function. The models that motivate the work that will be presented in the talk produce output in the form of image or volumetric data, and the properties of the data that are captured by useful metrics are geometric in nature.