Table 3.

Independent sample T-Test results of RS-PPSO and three comparison algorithms.

Functions	PSO	RS-PSO	PPSO
$f_1$	$+$	$+$	$+$
$f_2$	$+$	$+$	$+$
$f_3$	$+$	$=$	$+$
$f_4$	$+$	$+$	$=$
$f_5$	$+$	$+$	$+$
$f_6$	$+$	$+$	$+$
$f_7$	$+$	$+$	$=$
$f_8$	$+$	$=$	$+$
$f_9$	$+$	$+$	$+$
$f_{10}$	$+$	$-$	$+$
$f_{11}$	$+$	$=$	$-$
$f_{12}$	$+$	$+$	$+$