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Nonlinear Dimensionality Reduction by Locally Linear Embedding
Sam T. Roweis,1and Lawrence K. Saul2
Many areas of science depend on exploratory data
analysis and visualization. The need to analyze large amounts of
multivariatedata raises the fundamental problem of dimensionality
reduction:how to discover compact representations of high-dimensional
data.Here, we introduce locally linear embedding (LLE), an
unsupervisedlearning algorithm that computes low-dimensional,
neighborhood-preservingembeddings of high-dimensional inputs. Unlike
clustering methodsfor local dimensionality reduction, LLE maps its
inputs into asingle global coordinate system of lower dimensionality,
and itsoptimizations do not involve local minima. By exploiting the
localsymmetries of linear reconstructions, LLE is able to learn theglobal structure of nonlinear manifolds, such as those generatedby
images of faces or documents of text.
1 Gatsby Computational Neuroscience Unit,
University College London, 17 Queen Square, London WC1N 3AR, UK.
2 AT&T Lab--Research, 180 Park Avenue, Florham Park,
NJ 07932, USA.
E-mail: roweis{at}gatsby.ucl.ac.uk (S.T.R.);
lsaul{at}research.att.com (L.K.S.)
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In Science Magazine
PERSPECTIVES
H. Sebastian Seung and Daniel D. Lee (22 December 2000) Science290 (5500), 2268.
[DOI: 10.1126/science.290.5500.2268] |Summary »|Full Text »
REPORTS
Joshua B. Tenenbaum, Vin de Silva, and John C. Langford (22 December 2000) Science290 (5500), 2319.
[DOI: 10.1126/science.290.5500.2319] |Abstract »|Full Text »|PDF »|Supplemental Data »
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