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JSSC 2023第1期Digital Circuits

A 962-nJclass Neural Signal Processor With Adaptable Intelligence for Seizure Pr

首款用于癫痫预测的神经信号处理器,集成预处理、特征提取、可重构SVM核和后处理单元,提升预测性能。
92.0%灵敏度, 0.57/h误报率, 8.44ms训练延迟, 2.31mW功耗, 6.05MHz频率
癫痫预测神经信号处理器支持向量机能量优化矩阵乘法
近似能量算子(AEO)减少特征提取器面积28%
基于缩放的Newton-Raphson除法器减少迭代次数62.5%
基于指针的矩阵乘法减少ADMM-SVM训练计算复杂度99.9%
Abstract
This work presents the world’s first neural signal processor for seizure prediction, which includes a preprocessing unit, a feature extractor, a reconfigurable support vector machine (SVM) kernel, and a postprocessing unit. Seizure prediction per- formance is enhanced by on-chip training for model adaptation. Design optimization is applied across the layers of abstraction to minimize the area and energy. The area of the feature extractor is reduced by 28% with an approximated energy oper- ator (AE