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Proceedings Paper

Nonlinearity Requirements For Correlation Based Associative Memories
Author(s): R J Marks; L E Atlas; J J Choi; S Oh; K F Cheung; D C Park
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Paper Abstract

A matched filter based architecture for associative memories ( MB'AM ) has been proposed by many researchers[1-12]. The correlation from a leg of a matched filter bank, after being altered nonlinearly, weights its corresponding library vector. The weighted vectors are summed and clipped to give an estimate of the library vector closest to the input. We analyze the performance of such architectures for binary and/or bipolar inputs and libraries. Sufficient conditions are derived for the correlation nonlinearity so that the MFAM outputs the correct result. If, for example, N bipolar library vectors are stored, then the correlation nonlinearity Z(x) = Nx/2, will always result in that library vector closest to the input in the Hamming sense.

Paper Details

Date Published: 3 May 1988
PDF: 7 pages
Proc. SPIE 0881, Optical Computing and Nonlinear Materials, (3 May 1988); doi: 10.1117/12.944080
Show Author Affiliations
R J Marks, University of Washington (United States)
L E Atlas, University of Washington (United States)
J J Choi, University of Washington (United States)
S Oh, University of Washington (United States)
K F Cheung, University of Washington (United States)
D C Park, University of Washington (United States)

Published in SPIE Proceedings Vol. 0881:
Optical Computing and Nonlinear Materials
Nasser Peyghambarian, Editor(s)

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