Table 1.

Comparison of eight multi-task regression algorithms on the MRI data set in terms of averaged nMSE and aMSE.

measure	traning ratio	ridge	lasso	trace	L1,2	DirtyMTL	SLR	RMTL	rMTFL
nMSE	0.15	0.9494	0.6469	0.6889	0.6445	0.6355	0.6905	0.6930	0.5743
	0.20	0.9355	0.6242	0.6629	0.6555	0.6231	0.6648	0.6557	0.5700
	0.25	0.9151	0.6015	0.6230	0.6446	0.6082	0.6244	0.6239	0.5498
aMSE	0.15	0.0270	0.0188	0.0195	0.0184	0.0177	0.0196	0.0196	0.0168
	0.20	0.0262	0.0177	0.0184	0.0184	0.0172	0.0185	0.0182	0.0163
	0.25	0.0255	0.0170	0.0171	0.0181	0.0167	0.0171	0.0171	0.0157