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February 2020

Gaussian Differential Privacy, with Applications to Deep Learning

Weijie Su (University of Pennsylvania)

February 7 @ 11:00 am - 12:00 pm
E18-304

Abstract:   Privacy-preserving data analysis has been put on a firm mathematical foundation since the introduction of differential privacy (DP) in 2006. This privacy definition, however, has some well-known weaknesses: notably, it does not tightly handle composition. This weakness has inspired several recent relaxations of differential privacy based on the Renyi divergences. We propose an alternative relaxation we term "f-DP", which has a number of nice properties and avoids some of the difficulties associated with divergence based relaxations. First, f-DP preserves…

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Diffusion K-means Clustering on Manifolds: provable exact recovery via semidefinite relaxations

Xiaohui Chen (University of Illinois at Urbana-Champaign)

February 14 @ 11:00 am - 12:00 pm
E18-304

Abstract: We introduce the diffusion K-means clustering method on Riemannian submanifolds, which maximizes the within-cluster connectedness based on the diffusion distance. The diffusion K-means constructs a random walk on the similarity graph with vertices as data points randomly sampled on the manifolds and edges as similarities given by a kernel that captures the local geometry of manifolds. Thus the diffusion K-means is a multi-scale clustering tool that is suitable for data with non-linear and non-Euclidean geometric features in mixed dimensions. Given…

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Rina Foygel Barber (University of Chicago)

February 21 @ 11:00 am - 12:00 pm
E18-304

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Kavita Ramanan (Brown University)

February 28 @ 11:00 am - 12:00 pm
E18-304

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March 2020

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Suriya Gunasekar (Microsoft Research)

March 6 @ 11:00 am - 12:00 pm
E18-304

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Daniel Spielman (Yale University)

March 13 @ 8:00 am - 5:00 pm
E18-304

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Hilary Finucane (Broad Institute)

March 20 @ 11:00 am - 12:00 pm
E18-304

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April 2020

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Alessandro Rinaldo (Carnegie Mellon University)

April 10 @ 11:00 am - 12:00 pm
E18-304

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Ery Arias-Castro (UC-San Diego)

April 17 @ 11:00 am - 12:00 pm
E18-304

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Jon Wellner (University of Washington)

April 24 @ 11:00 am - 12:00 pm
E18-304

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