A spintronic memristive circuit on the optimized RBF-MLP neural network |
| |
Institution: | 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 |
| |
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. |
| |
Keywords: | radial basis function network (RBF) genetic algorithm spintronic memristor memristive circuit |
|
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
|