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Poster
Matrix Completion from Noisy Entries
Raghunandan Keshavan · Andrea Montanari · Sewoong Oh
Given a matrix M of low-rank, we consider the problem of reconstructing it from noisy observations of a small, random subset of its entries. The problem arises in a variety of applications, from collaborative filtering (the ‘Netflix problem’) to structure-from-motion and positioning. We study a low complexity algorithm introduced in [1], based on a combination of spectral techniques and manifold optimization, that we call here OPTSPACE. We prove performance guarantees that are order-optimal in a number of circumstances.
Author Information
Raghunandan Keshavan (Stanford University)
Andrea Montanari (Stanford)
Sewoong Oh (University of Washington)
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