Table 4. Median result for hypervolume (HV), minimum f₀, total solution set size and number of low f₀ solutions for ${\text{DE}}_{bias}^{\text{r}/\text{d}/3*}$ and the prior ACO.

Size	Algorithm	HV	min f0	Solution count
				total	with f0 ≤ 600
7 × 7	${\text{DE}}_{bias}^{\text{r}/\text{d}/3*}$	91.3	464	262	141.5
	ACO	90.9	469	70	18
8 × 8	${\text{DE}}_{bias}^{\text{r}/\text{d}/3*}$	92.7	420	382	260.5
	ACO	92.3	428	69	21
9 × 9	${\text{DE}}_{bias}^{\text{r}/\text{d}/3*}$	93.6	383	551	396
	ACO	93.4	397	110	28
10 × 10	${\text{DE}}_{bias}^{\text{r}/\text{d}/3*}$	94.2	359	706.5	529.5
	ACO	93.7	378	87	28