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Large memory storage and retrieval (LAMSTAR) network

  • US 5,920,852 A
  • Filed: 04/30/1997
  • Issued: 07/06/1999
  • Est. Priority Date: 04/30/1996
  • Status: Expired due to Fees
First Claim
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1. A network system for processing an input word comprising an associated set of subword category subwords, the input word being an input observation of a monitored system as of a specific time period, said system comprising:

  • means for storing the input word;

    a SOM subsystem comprising a plurality of self-organizing map modules (SOM), each said SOM module comprising a plurality of memory cells for selectively storing, as stored subwords, the category subwords of the input word, said system further comprising;

    means for comparing and correlating said category subwords of the input word to determine a winning match between one of the subwords of the input word and a finite predetermined number of the memory cells for subwords stored within said SOM modules;

    means for choosing a selected one of the memory cells in a selected one of said SOM modules responsive to said winning match;

    a plurality of sets of subword category correlating links and of SOM memory cell correlating links, each said correlating link comprising a memory cell link weight value for linking respective associated ones of selected ones of the memory cells between respective associated selected ones of the SOM modules;

    a task evaluator subsystem comprised of means for establishing threshold values for said correlating links;

    said system further comprising;

    means for adjusting said memory cell link weight values responsive to the input subwords and to the SOM memory cells, said memory cell link weight values being increased upon said winning match, said memory cell link weight values being decreased when no said winning match is established; and

    means for storing a subword in one of the SOM memory cells when no winning match is determined after a predetermined number of memory cells in the SOM modules are compared.

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