Automatic classification of spread‐F types in ionogram images using support vector machine and convolutional neural network

Earth, Planets and Space

Table 10 Evaluation results of model optimizer and learning rate on CNN model

Learning rate	Accuracy of different optimizers (%)
Learning rate	Adam	Adagard	SGD
0.01	34.5	76.6	28.1
0.001	34.5	34.5	28.1
0.0001	88.8	86.8	88.5
0.00001	89.3	81.2	88.8
0.000001	81.1	69.3	86.6