SVM classifier parameter optimization method based on improved particle swarm algorithm
A technology for improving particle swarm optimization and optimization methods, applied in instruments, calculations, calculation models, etc., can solve problems such as low comprehensive performance of classifiers and poor generalization ability of classifiers, and achieve enhanced generalization ability, enhanced flexibility, and high The effect of classification accuracy
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[0028] Such as figure 1 As described, this method first selects the parameters to be optimized, first collects sample data, and performs 10-fold cross-validation experiments on the sample data. During the experiment, one parameter of the classifier is selected as an independent variable, and other parameters of the classifier are fixed. After the experiment is completed, compare the impact of each parameter on the performance of the classifier from the three indicators of average classification accuracy, test accuracy and support vector ratio, and select several parameters that have a greater impact on the performance of the classifier as the parameters to be optimized.
[0029] After experiments, four parameters to be optimized are selected, namely the polynomial kernel function weight a, the polynomial kernel parameter d, and the Gaussian kernel parameter g (g=σ 2 ) And the penalty factor C.
[0030] Then to the parameter optimization stage, including:
[0031] (1) Initialize th...
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