Accession Number : ADP008235

Title :   Error-Corrective Recall of Digital Optical Images in Neural Networks Models by Photo-Burning of Spectral Holes,

Corporate Author : EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZURICH (SWITZERLAND)

Personal Author(s) : Rebane, Karl K. ; Ollikainen, Olavi ; Rebane, Alexander

Report Date : 22 MAY 1992

Pagination or Media Count : 4

Abstract : The neural-network-like scheme of data storage and processing of N-bit sequences of information needs a memory of about N(2) elements (interconnections). In digital auto-associative memories the useful data is presented usually as a set of S different words, v(s)(s=l,...,S), each word being a sequence of N bits. Simple mathematical rule, given originally by Hopfield, can serve as an algorithm to calculate the values of the N(2) elements of the memory matrix, T. Recall of the memory gives an output word, v(out), which results from a thresholded inner product between the interrogating input word, v(in), and the memory matrix. The readout procedure can be expressed mathematically, where TRH(...) stands for the thresholding procedure.

Descriptors :   *NEURAL NETS, *OPTICAL IMAGES, *MOLECULAR SPECTROSCOPY, ALGORITHMS, INPUT, NETWORKS, OUTPUT, RECALL, DATA STORAGE SYSTEMS, OPTICAL STORAGE, FREQUENCY, PARALLEL PROCESSING, MEMORY DEVICES, ERROR CORRECTION CODES.

Subject Categories : Optics
      Cybernetics
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE