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Title: Sequence memory based on coherent spin-interaction neural networks
Authors: Xia, M
Wong, WK 
Wang, ZJ
Issue Date: 2014
Publisher: MIT Press
Source: Neural computation, 2014, v. 26, no. 12, p. 2944-2961 How to cite?
Journal: Neural computation 
Abstract: Sequence information processing, for instance, the sequence memory, plays an important role on many functions of brain. In the workings of the human brain, the steady-state period is alterable. However, in the existing sequence memory models using heteroassociations, the steady-state period cannot be changed in the sequence recall. In this work, a novel neural network model for sequence memory with controllable steady-state period based on coherent spininteraction is proposed. In the proposed model, neurons fire collectively in a phase-coherent manner, which lets a neuron group respond differently to different patterns and also lets different neuron groups respond differently to one pattern. The simulation results demonstrating the performance of the sequence memory are presented. By introducing a new coherent spin-interaction sequence memory model, the steady-state period can be controlled by dimension parameters and the overlap between the input pattern and the stored patterns. The sequence storage capacity is enlarged by coherent spin interaction compared with the existing sequence memory models. Furthermore, the sequence storage capacity has an exponential relationship to the dimension of the neural network.
ISSN: 0899-7667 (print)
1530-888X (online)
DOI: 10.1162/NECO_a_00663
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