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Thursday, April 18, 2019 — 4:00 PM EDT
Title: Graph Sparsification by Effective Resistances
| Speaker: | Akshay Ramachandran |
| Affiliation: | University of Waterloo |
| Room: | MC 5417 |
Abstract:
We will discuss an application of the matrix concentration inequalities of Tropp to spectral sparsification of graphs.
Thursday, April 25, 2019 — 4:00 PM EDT
Title: Recovery of a mixture of Gaussians by sum-of-norms clustering
| Speaker: | Tao Jiang |
| Affiliation: | University of Waterloo |
| Room: | MC 5417 |
Abstract:
Sum-of-norms clustering is a method for assigning n points in Rd to K clusters, 1 ≤ K ≤ n, using convex optimization.