Simultaneous Channel and Feature Selection of Fused EEG Features Based on Sparse Group Lasso

Table 5

Experimental results on different datasets.

Channel/feature selection method	Dataset A			Dataset E			Dataset F			Dataset G
	Channel	Feature	Error rate (%)	Channel	Feature	Error rate (%)	Channel	Feature	Error rate (%)	Channel	Feature	Error rate (%)
Elastic Net	44	120	32.60	41	89	16.16	27	38	43.86	49	168	23.50
Lasso	27	43	31.28	38	60	15.28	27	38	43.86	22	49	23.51
Sparse Group Lasso (α = 0.25)	16	890	31.72	22	1193	17.03	13	742	40.96	12	868	22.22
Sparse Group Lasso (α = 0.5)	18	737	29.26	18	703	16.59	14	584	40.52	14	686	20.94
Sparse Group Lasso (α = 0.75)	17	440	32.15	23	508	15.28	14	329	40.52	14	370	20.94
Group Lasso	17	1190	31.28	26	1820	17.47	16	1120	40.35	10	700	22.22