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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Neurocomputingarrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
Neurocomputing
Article . 2017 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
DBLP
Article . 2017
Data sources: DBLP
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Predictive Nyström method for kernel methods

Authors: Jiangang Wu; Lizhong Ding 0001; Shizhong Liao;

Predictive Nyström method for kernel methods

Abstract

Nystrm method is a widely used matrix approximation method for scaling up kernel methods, and existing sampling strategies for Nystrm method are proposed to improve the matrix approximation accuracy, but leaving approximation independent of learning, which can result in poor predictive performance of kernel methods. In this paper, we propose a novel predictive sampling strategy (PRESS) for Nystrm method that guarantees the predictive performance of kernel methods. PRESS adaptively updates the sampling distribution via the discrepancy between approximate and accurate solutions of kernel methods caused by kernel matrix approximation, and samples informative columns from the kernel matrix according to the sampling distribution to reduce the predictive performance loss of kernel methods. We prove upper error bounds on the approximate solutions of kernel methods produced by Nystrm method with PRESS, whose convergence shows that approximate solutions of kernel methods are identical to accurate ones for large enough samples. Experimental results indicate that integrating learning into approximation is necessary for delivering better predictive performance, and PRESS significantly outperforms existing sampling strategies while preserving low computational cost.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
7
Average
Top 10%
Top 10%
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