Dense Modifiable Interconnections Utilizing Photorefractive Volume Holograms

Abstract

This report summarizes research efforts on (1) the demonstration of holographic degeneracies in associative memories, (2) the procedure for designing fractal grids for planar holograms, (3) the experimental demonstration of one and two layer neural networks that are designed with such fractal sampling grids, (4) the experimental demonstration of dynamic holographic memories that are capable of an arbitrarily long sequence of adaptations, (5) the optical implementation of the Kanerva's network for hand-written character recognition, (6) the development of an anti-Hebbian local learning algorithm for training multi-layer neural networks, (7) the experimental demonstration of optical radial basis function network, and (8) the demonstration of a two-layer local-representation optical network for real-time face recognition.

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Document Details

Document Type
Technical Report
Publication Date
May 20, 1992
Accession Number
ADA252193

Entities

People

  • Demetri Psaltis

Organizations

  • California Institute of Technology

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Adaptive Systems
  • Air Force
  • Algorithms
  • Artificial Intelligence
  • Character Recognition
  • Computer Simulations
  • Computers
  • Content Addressable Memory
  • Crystals
  • Electrical Engineering
  • Holograms
  • Information Processing
  • Information Systems
  • Neural Networks
  • Optics
  • Optoelectronic Feedback
  • Recognition

Fields of Study

  • Physics

Readers

  • Neural Network Machine Learning.
  • Optical Physics and Photonics.

Technology Areas

  • AI & ML
  • AI & ML - Machine Learning Algorithms
  • AI & ML - Neural Networks