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- W4313129191 abstract "Recently, many large-scale neuromorphic systems that emulate spiking neural networks have been presented. Biological evidence emphasizes the importance of the log-normal distribution of biological neural and synaptic parameters in the brain; however, this fact is easily ignored sometimes, and the parameters are excessively optimized to scale up a system. This is because high-precision parameters require floating-point arithmetic–an operation known to consume high-energy and result in a high implementation cost in digital hardware. In this study, we propose a novel neuron implementation model that enhances neural and synaptic dynamics using the time-embedded floating-point arithmetic for better biological plausibility and low-power consumption. The proposed algorithm enables sharing temporal information with a membrane potential by time-embedded floating-point arithmetic, thus minimizing the memory usage of the neural state. In addition, this method need not access the static random-access memory at every time step, thus reducing the dynamic power consumption, even with a floating-point precision neural and synaptic dynamics. Using the proposed model, we implemented a core group with a total of 8,192 neurons on a field-programmable gate array device, Xilinx XC7K160T. The core group is designed for use in large-scale neuromorphic systems. We tested the neuron model in a core under various experimental conditions." @default.
- W4313129191 created "2023-01-06" @default.
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- W4313129191 date "2023-01-01" @default.
- W4313129191 modified "2023-09-26" @default.
- W4313129191 title "High Dynamic Range Digital Neuron Core With Time-Embedded Floating-Point Arithmetic" @default.
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- W4313129191 doi "https://doi.org/10.1109/tcsi.2022.3206238" @default.
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