Brain Informatics

Table 4 The number of selected features in Stage II of FIDF

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

Stage II	SFS		SBS		PSO–SVM		HHPSO–SVM
Stage II	Mean	SD	Mean	SD	Mean	SD	Mean	SD
1	26	5	166176	0	790	251	1704	438
2	16	4	107416	0	402	115	887	218
3	20	3	46665	0	329	95	815	196
4	26	4	227475	0	467	158	884	250
5	43	8	87990	0	153	53	560	164
6	29	4	60378	0	232	69	546	139

Average numbers and standard deviations of selected features are calculated for WFS without feature selection, SFS sequential forward feature selection, SBS sequential backward feature selection, PSO–SVM and HHPSO–SVM are presented

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