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Accelerated gradient algorithm for RBF neural network
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DOI：10.1016/j.neucom.2021.02.009.png)
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Gradient-based algorithms are commonly used for training radial basis function neural network (RBFNN). However, one of the challenges in the training process is determining how to avoid vanishing gradient. To solve this problem, an accelerated gradient algorithm (AGA) is designed to improve the learning perfor-mance of RBFNN in this paper. First, an indirect detection mechanism, based on the instantaneous gradi-ent decay rate (IGDR) and instantaneous convergence rate (ICR), is developed to identify the vanishing gradient in learning process. Second, an amplification gradient strategy (AGS), which can increase the gradient value of learning parameters, is designed to accelerate the learning speed of RBFNN. Third, the analysis of AGA-based RBFNN (AGA-RBFNN) is given to guarantee the successful application. Finally, some benchmark and real problems are used to illustrate the effectiveness of AGA-RBFNN. The results demonstrate the effectiveness of AGA-RBFNN. (c) 2021 Elsevier B.V. All rights reserved.
Keyword:
Radial basis function neural network
Instantaneous gradient decay rate
Instantaneous convergence rate
Amplification gradient strategy
Accelerated gradient algorithm
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IF:
6.5
论文数:
2.5W
被引数:
6.5W
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