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Cellular cosheaves for distributed computation of persistent homology

Wednesday, May 23, 2018 - 1:30pm - 2:00pm
Lind 305
Hee Rhang (Iris) Yoon (University of Pennsylvania)
We present a distributed computation mechanism of persistent homology using cellular cosheaves. Our construction is an extension of the generalized Mayer-Vietoris principle to filtered spaces obtained via a sequence of spectral sequences. We discuss a general framework in which the distribution scheme can be adapted according to a user-specific property of interest. The resulting persistent homology reflects properties of the topological features, allowing the user to perform refined data analysis. Finally, we apply our construction to perform a multi-scale analysis to detect features of varying sizes that are overlooked by standard persistent homology.

This is joint work with Robert Ghrist.