中国物理B ›› 2022, Vol. 31 ›› Issue (11): 110702-110702.doi: 10.1088/1674-1056/ac6b1d

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A spintronic memristive circuit on the optimized RBF-MLP neural network

Yuan Ge(葛源)1, Jie Li(李杰)1, Wenwu Jiang(蒋文武)1, Lidan Wang(王丽丹)1,2,3,4, and Shukai Duan(段书凯)1,2,3,4,†   

  1. 1 School of Artificial Intelligence, Southwest University, Chongqing 400715, China;
    2 Chongqing Brain Science Collaborative Innovation Center, Chongqing 400715, China;
    3 Brain-inspired Computing and Intelligent Control of Chongqing Key Laboratory, Chongqing 400715, China;
    4 National&Local Joint Engineering Laboratory of Intelligent Transmission and Control Technology, Chongqing 400715, China
  • 收稿日期:2021-12-22 修回日期:2022-02-23 接受日期:2022-04-28 出版日期:2022-10-17 发布日期:2022-10-28
  • 通讯作者: Shukai Duan E-mail:duansk@swu.edu.cn

A spintronic memristive circuit on the optimized RBF-MLP neural network

Yuan Ge(葛源)1, Jie Li(李杰)1, Wenwu Jiang(蒋文武)1, Lidan Wang(王丽丹)1,2,3,4, and Shukai Duan(段书凯)1,2,3,4,†   

  1. 1 School of Artificial Intelligence, Southwest University, Chongqing 400715, China;
    2 Chongqing Brain Science Collaborative Innovation Center, Chongqing 400715, China;
    3 Brain-inspired Computing and Intelligent Control of Chongqing Key Laboratory, Chongqing 400715, China;
    4 National&Local Joint Engineering Laboratory of Intelligent Transmission and Control Technology, Chongqing 400715, China
  • Received:2021-12-22 Revised:2022-02-23 Accepted:2022-04-28 Online:2022-10-17 Published:2022-10-28
  • Contact: Shukai Duan E-mail:duansk@swu.edu.cn

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摘要： A radial basis function network (RBF) has excellent generalization ability and approximation accuracy when its parameters are set appropriately. However, when relying only on traditional methods, it is difficult to obtain optimal network parameters and construct a stable model as well. In view of this, a novel radial basis neural network (RBF-MLP) is proposed in this article. By connecting two networks to work cooperatively, the RBF's parameters can be adjusted adaptively by the structure of the multi-layer perceptron (MLP) to realize the effect of the backpropagation updating error. Furthermore, a genetic algorithm is used to optimize the network's hidden layer to confirm the optimal neurons (basis function) number automatically. In addition, a memristive circuit model is proposed to realize the neural network's operation based on the characteristics of spin memristors. It is verified that the network can adaptively construct a network model with outstanding robustness and can stably achieve 98.33% accuracy in the processing of the Modified National Institute of Standards and Technology (MNIST) dataset classification task. The experimental results show that the method has considerable application value.

关键词: radial basis function network (RBF), genetic algorithm spintronic memristor, memristive circuit

Abstract: A radial basis function network (RBF) has excellent generalization ability and approximation accuracy when its parameters are set appropriately. However, when relying only on traditional methods, it is difficult to obtain optimal network parameters and construct a stable model as well. In view of this, a novel radial basis neural network (RBF-MLP) is proposed in this article. By connecting two networks to work cooperatively, the RBF's parameters can be adjusted adaptively by the structure of the multi-layer perceptron (MLP) to realize the effect of the backpropagation updating error. Furthermore, a genetic algorithm is used to optimize the network's hidden layer to confirm the optimal neurons (basis function) number automatically. In addition, a memristive circuit model is proposed to realize the neural network's operation based on the characteristics of spin memristors. It is verified that the network can adaptively construct a network model with outstanding robustness and can stably achieve 98.33% accuracy in the processing of the Modified National Institute of Standards and Technology (MNIST) dataset classification task. The experimental results show that the method has considerable application value.

Key words: radial basis function network (RBF), genetic algorithm spintronic memristor, memristive circuit

中图分类号:  (Neural networks, fuzzy logic, artificial intelligence)

  • 07.05.Mh
84.35.+i (Neural networks) 85.35.-p (Nanoelectronic devices) 07.50.Ek (Circuits and circuit components)