BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Michael P. Friedlander (University of British Columbia) DTSTART:20201026T143000Z DTEND:20201026T153000Z DTSTAMP:20260423T021003Z UID:OWOS/24 DESCRIPTION:Title: Po lar deconvolution of mixed signals\nby Michael P. Friedlander (Univers ity of British Columbia) as part of One World Optimization seminar\n\n\nAb stract\nThe signal demixing problem seeks to separate the superposition of multiple signals into its constituent components. We model the superposit ion process as the polar convolution of atomic sets\, which allows us to u se the duality of convex cones to develop an efficient two-stage algorithm with sublinear iteration complexity and linear storage. If the signal mea surements are random\, the polar deconvolution approach stably recovers lo w-complexity and mutually-incoherent signals with high probability and wit h optimal sample complexity. Numerical experiments on both real and synthe tic data confirm the theory and efficiency of the proposed approach.\n\nJo int work with Zhenan Fan\, Halyun Jeong\, and Babhru Joshi at the Universi ty of British Columbia.\n\nThe address and password of the zoom room of th e seminar are sent by e-mail on the mailinglist of the seminar one day bef ore each talk\n LOCATION:https://researchseminars.org/talk/OWOS/24/ END:VEVENT END:VCALENDAR