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Randomised dimensionality reduction for persistent homology

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If you have a question about this talk, please contact Rachel Furner.

We discuss ways in which ideas arising from compressive sensing and related fields can lead to complexity reductions in topological data analysis. In particular, it is possible to reduce the computation of persistent homology of Euclidean point clouds to spaces whose dimension is proportional to an intrinsic notion of dimension, the Gaussian width, associated to structural properties of the data. We give an overview of the relevant theory and discuss applications and limitations of this approach.

This talk is part of the CCIMI Seminars series.

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