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Analog pattern categorization system having dual weighted connectivity between nodes

  • US 5,179,596 A
  • Filed: 07/05/1991
  • Issued: 01/12/1993
  • Est. Priority Date: 07/05/1991
  • Status: Expired due to Fees
First Claim
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1. A pattern categorization system comprising:

  • a short term memory presentation field for presenting input signals defining an input pattern;

    a plurality of input nodes, each for categorizing patterns with respect to a plurality of categories, the input nodes being coupled to the presentation field for receiving the input signals, for each input signal received by an input node, the input node having two long term memory weights, the long term memory weights being indicative of a plurality of patterns categorized by the input node such that a net signal is generated as a function of the long term memory weights and input signals to the input node, and the net signal is indicative of similarity between the input pattern and patterns categorized by the input node;

    a plurality of output nodes, one for each input node such that a different input node is connected to a different output node and each output node receives the net signal from the respective input node, and in response to the respective received net signal each output node selecting a category of the corresponding input node such that the output nodes provide a many-to-many mapping between plural parts of the input pattern and plural categories, each output node providing a short term memory output signal indicative of category selection; and

    means for modifying category selections of the output nodes such that sum of the output signals from the output nodes is within a predefined range, upon the sum of the output signals being within the predefined range, the output nodes providing categorization of the input pattern from the mapping between plural parts of the input pattern and plural categories of the input nodes.

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