Table 6.

Performance of 100 trials of randomly chosen training and test sets.

Visual Features	SROCC	PLCC
$\left(f_1,f_2\right)$	0.635	0.602
$\left(f_1,f_2,f_3,f_4\right)$	0.665	0.642
$\left(f_1,f_2,f_5,f_6\right)$	0.603	0.574
$\left(f_1,f_2,f_3,f_4,f_5,f_6\right)$	0.606	0.602