Research Article
Automatic Prediction of Meningioma Grade Image Based on Data Amplification and Improved Convolutional Neural Network
Table 3
Impact of different activation functions on network test results.
| ā | Sigmoid | Tanh | ReLU | ELU |
| Characteristics | Gradient disappears | Convergence speed is faster than Sigmoid; gradient disappears | The input is positive, the gradient does not disappear; the input is negative, the gradient disappears. | It combines sigmoid and ReLU; and gradient disappears | Test accuracy rate | 70.00% | 56.67% | 76.67% | 83.33% |
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