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Brain Informatics
Fig. 4 | Brain Informatics

Fig. 4

From: Brain response pattern identification of fMRI data using a particle swarm optimization-based approach

Fig. 4

Cross-validated solutions of PSO–SVM (in blue) and HHPSO–SVM (in red) from Stage II, where x-axis represents the number of selected voxels and y-axis represents the classification error. Lighter colormeans that the solution is obtained in earlier optimization iterations, while darker colordenotes the solution is obtained in later optimization iterations. (Color figure online)

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