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Fast recovery from a union of subspaces
Name
6484-fast-recovery-from-a-union-of-subspaces.pdf
Description
Published version
Size
371.82 KB
Format
Adobe PDF
Checksum (MD5)
edba2ae6238d94026eea7fc3ec6385e2
Author(s)
Indyk, Piotr
Schmidt, Ludwig
Date Issued
2016
Citation
Indyk, Piotr and Schmidt, Ludwig. 2016. "Fast recovery from a union of subspaces."
Version
Final published version
Abstract
© 2016 NIPS Foundation - All Rights Reserved. We address the problem of recovering a high-dimensional but structured vector from linear observations in a general setting where the vector can come from an arbitrary union of subspaces. This setup includes well-studied problems such as compressive sensing and low-rank matrix recovery. We show how to design more efficient algorithms for the union-of-subspace recovery problem by using approximate projections. Instantiating our general framework for the low-rank matrix recovery problem gives the fastest provable running time for an algorithm with optimal sample complexity. Moreover, we give fast approximate projections for 2D histograms, another well-studied low-dimensional model of data. We complement our theoretical results with experiments demonstrating that our framework also leads to improved time and sample complexity empirically.
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://papers.nips.cc/paper/6484-fast-recovery-from-a-union-of-subspaces
