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Part 3: Brain science, information science and associative memory model

  • Tutorial Series on Brain-Inspired Computing
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Abstract

I review recent progress on the associative memory model, which is a kind of neural network model. First, I introduce this model and a mathematical theory called statistical neurodynamics describing its properties. Next, I discuss an associative memory model with hierarchically correlated memory patterns. Initially, in this model, the state approaches a mixed state that is a superposition of memory patterns. After that, it diverges from the mixed state, and finally converges to a memory pattern. I show that this retrieval dynamics can qualitatively replicate the temporal dynamics of face-responsive neurons in the inferior temporal cortex, which is considered to be the final stage of visual perception in the brain. Finally, I show an unexpected link between associative memory and mobile phones (CDMA). The mathematical structure of the CDMA multi-user detection problem resembles that of the associative memory model. It enables us to apply a theoretical framework of the associative memory model to CDMA.

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Authors and Affiliations

  1. The University of Tokyo, 277-8561, Kashiwa Chiba, Japan

    Masato Okada

  2. RIKEN Brain Science Institute, 351-0198, Wako Saitama, Japan

    Masato Okada

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  1. Masato Okada
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Masato Okada, Ph.D.: He is a Professor of Department of Complexity Science and Engineering, Graduate School of Frontier Sciences the University of Tokyo. He received B.S. from Osaka City University, Japan in 1985 and M.S. and Ph.D from Osaka University in 1987 and 1997, respectively.

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Okada, M. Part 3: Brain science, information science and associative memory model. New Gener Comput 24, 185–201 (2006). https://doi.org/10.1007/BF03037297

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  • DOI: https://doi.org/10.1007/BF03037297

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