System for self-organization of stable category recognition codes for analog input patterns
First Claim
1. In a pattern recognition device comprising a short term feature representation field for receiving input signals defining an input pattern and template signals defining a long term memory template, means for selecting at least one category node based on a pattern from the short term field, means for generating the long term template based on the selected category and means for adapting category selection and the long term memory template to the input signals, a category selection being reset with an insufficient match between the input pattern and template, the improvement wherein the match is based on the closeness between a vector of the template and a vector of the short term field.
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Abstract
A neural network includes a feature representation field which receives input patterns. Signals from the feature representation field select a category from a category representation field through a first adaptive filter. Based on the selected category, a template pattern is applied to the feature representation field, and a match between the template and the input is determined. If the angle between the template vector and a vector within the representation field is too great, the selected category is reset. Otherwise the category selection and template pattern are adapted to the input pattern as well as the previously stored template. A complex representation field includes signals normalized relative to signals across the field and feedback for pattern contrast enhancement.
62 Citations
74 Claims
- 1. In a pattern recognition device comprising a short term feature representation field for receiving input signals defining an input pattern and template signals defining a long term memory template, means for selecting at least one category node based on a pattern from the short term field, means for generating the long term template based on the selected category and means for adapting category selection and the long term memory template to the input signals, a category selection being reset with an insufficient match between the input pattern and template, the improvement wherein the match is based on the closeness between a vector of the template and a vector of the short term field.
- 16. In a pattern recognition device comprising a short term feature representation field for receiving input signals defining an input pattern and template signals defining a long term memory template, means for selecting at least one category node based on a pattern from the short term field, means for generating the long term template based on the selected category and means for adapting category selection and the long term memory template to the input signals, the improvement wherein the short term field comprises a plurality of subfields of short term signals and feedback of short term signals within the short term field.
- 21. A pattern recognition device comprising a short term feature representation field for receiving input signals defining an input pattern and template signals defining a long term memory template, means for selecting at least one category node based on a pattern from the short term field, means for generating the long term memory template based on the selected category and means for adapting category selection and a long term memory template to the input signals, the improvement wherein the short term field comprises matched signals of a matched pattern, each matched signal being the weighted sum of a short term signal in the field and a template signal, the category selection and the long term memory template being adapted as dual functions of the difference between a template signal and the matched signal.
- 27. In a pattern recognition device comprising a short term feature representation field for receiving input signals defining an input pattern and template signals defining a long term memory template, means for selecting at least one category based on a pattern from the short term field, means for generating the long term memory template based on the selected category, and means for adapting category selection and the long term memory template to the input signals, the improvement wherein the short term field comprises a plurality of subfields of short term signals, each of the short term signals of at least one subfield being based on an input signal specific to the short term signal and also on non-specific signals generated from across the short term field.
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38. A pattern recognition method comprising:
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receiving in a short term feature representation field input signals defining an input pattern and template signals defining a long term memory template; selecting at least one category node based on a pattern from the short term field, category selection being reset with an insufficient match between the input pattern and template based on the closeness between a vector of the template and a vector of the short term field; generating the long term template based on the selected category which is not reset; and adapting category selection and the long term memory template to the input signals. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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53. A pattern recognition method comprising:
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receiving in a short term feature representation field comprising a plurality of subfields of short term signals input signals defining an input pattern and template signals defining a long term memory template and feeding short term signals back within the short term fields; selecting at least one category node based on a pattern from the short term field; generating the long term template based on the selected category; and adapting category selection and the long term memory template to the input signals and feedback of short term signals within the short term field. - View Dependent Claims (54, 55, 56, 57)
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58. A pattern recognition method comprising:
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receiving in a short term feature representation field input signals defining a long term memory template, the short term field comprising matched signals of a matched pattern, each matched signal being the weighted sum of a short term signal in the filed and a template signal; selecting at least one category node based on a pattern from the short term field; generating the long term memory template based on the selected category; and adapting category selection and a long term memory template to the input signals as dual functions of the difference between a template signal and the matched signal. - View Dependent Claims (59, 60, 61, 62, 63)
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64. A pattern recognition method comprising:
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receiving in a short term feature representation field input signals defining an input pattern and template signals defining a long term memory template, the short term field comprising a plurality of subfields of short term signals, each of the short term signals of at least one subfield being based on an input signal specific to the short term signal and also on non-specific signals generated from across the short term field; selecting at least one category based on a pattern from the short term field; generating the long term memory template based on the selected category; and adapting category selection and the long term memory template to the input signals. - View Dependent Claims (65, 66, 67, 68, 69, 70, 71, 72, 73, 74)
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Specification