Part 3: Brain science, information science and associative memory model |
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Authors: | Masato Okada |
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Affiliation: | 1. The University of Tokyo, 277-8561, Kashiwa Chiba, Japan 2. RIKEN Brain Science Institute, 351-0198, Wako Saitama, Japan
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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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Keywords: | |
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