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Dimensionality-reduction using connectionist networks

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1 Author(s)
E. Saund ; MIT, Cambridge, MA, USA

A method is presented for using connectionist networks of simple computing elements to discover a particular type of constraint in multidimensional data. Suppose that some data source provides samples consisting of n-dimensional feature-vectors, but that this data all happens to lie on an m-dimensional surface embedded in the n-dimensional feature space. Then occurrences of data can be more concisely described by specifying an m-dimensional location of the embedded surface than by reciting all n components of the feature vector. The recording of data in such a way is known as dimensionality-reduction. A method is presented for performing dimensionality-reduction in a wide class of situations for which an assumption of linearity need not be made about the underlying constraint surface. The method takes advantage of self-organizing properties of connectionist networks of simple computing elements. The authors present a scheme for representing the values of continuous (scalar) variables in subsets of units

Published in:

IEEE Transactions on Pattern Analysis and Machine Intelligence  (Volume:11 ,  Issue: 3 )