Embedding via clustering: using spectral information to guide dimensionality reduction | IEEE Conference Publication | IEEE Xplore

Embedding via clustering: using spectral information to guide dimensionality reduction


Abstract:

We describe an approach to improve iterative dimensionality reduction methods by using information contained in the leading eigenvectors of a data affinity matrix. Using ...Show More

Abstract:

We describe an approach to improve iterative dimensionality reduction methods by using information contained in the leading eigenvectors of a data affinity matrix. Using an insight from the area of spectral clustering, we suggest modifying the gradient of an iterative method, so that latent space elements belonging to the same cluster are encouraged to move in similar directions during optimization. We also describe way to achieve this without actually having to explicitly perform an eigendecomposition. Preliminary experiments show that our approach makes it possible to speed up iterative methods and helps them to find better local minima of their objective function.
Date of Conference: 31 July 2005 - 04 August 2005
Date Added to IEEE Xplore: 27 December 2005
Print ISBN:0-7803-9048-2

ISSN Information:

Conference Location: Montreal, QC, Canada

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