Ground-State Coding in Partially Connected Neural Networks

Released on by National Aeronautics and Space Adm Nasa
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  • Ground-State Coding in Partially Connected Neural Networks Book Detail

  • Author : National Aeronautics and Space Adm Nasa
  • Release Date : 2018-12-31
  • Publisher : Independently Published
  • Genre :
  • Pages : 38
  • ISBN 13 : 9781792747328
  • File Size : 88,88 MB
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Ground-State Coding in Partially Connected Neural Networks by National Aeronautics and Space Adm Nasa PDF Summary

Book Description: Patterns over (-1,0,1) define, by their outer products, partially connected neural networks, consisting of internally strongly connected, externally weakly connected subnetworks. The connectivity patterns may have highly organized structures, such as lattices and fractal trees or nests. Subpatterns over (-1,1) define the subcodes stored in the subnetwork, that agree in their common bits. It is first shown that the code words are locally stable stares of the network, provided that each of the subcodes consists of mutually orthogonal words or of, at most, two words. Then it is shown that if each of the subcodes consists of two orthogonal words, the code words are the unique ground states (absolute minima) of the Hamiltonian associated with the network. The regions of attraction associated with the code words are shown to grow with the number of subnetworks sharing each of the neurons. Depending on the particular network architecture, the code sizes of partially connected networks can be vastly greater than those of fully connected ones and their error correction capabilities can be significantly greater than those of the disconnected subnetworks. The codes associated with lattice-structured and hierarchical networks are discussed in some detail. Baram, Yoram Ames Research Center NASA-TM-102239, A-89256, NAS 1.15:102239 RTOP 505-67-21...

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Scientific and Technical Aerospace Reports

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