Research Article

Exploring Further Advantages in an Alternative Formulation for the Set Covering Problem

Table 12

Landscape metrics for each instance and ABC approach.

Instd-ABCn-ABC
QMetricSSpeedSRateQMetricSSpeedSRate

4_10.00010.00000.00000.00080.78730.1333
4_21.00000.94861.00001.00000.95981.0000
4_30.57910.83660.56671.00000.94541.0000
4_40.30680.82380.30000.01140.84410.1333
4_51.00000.94821.00000.43370.86420.4333
4_60.08460.89850.06670.74320.86560.7333
4_70.03330.91870.03330.00000.00000.0000
4_80.02540.00000.00000.70760.86620.7000
4_90.03350.82150.03330.06710.88490.0667
4_101.00000.90501.00000.53850.85140.5333
5_10.03490.80710.03330.33380.89120.3333
5_20.00000.00000.00000.10130.81830.1000
5_30.00000.00000.00000.00000.90690.1000
5_41.00000.88480.90001.00000.96741.0000
5_51.00000.91341.00001.00000.95751.0000
5_61.00000.91081.00001.00000.97271.0000
5_70.00110.00000.00001.00000.90680.9667
5_81.00000.89520.93331.00000.86980.8667
5_90.00290.00000.00001.00000.95171.0000
5_100.50020.88880.50001.00000.92960.8333
6_10.23350.92740.23330.50080.86860.5000
6_21.00000.95091.00001.00000.96811.0000
6_31.00000.92390.90001.00000.97641.0000
6_41.00000.91931.00001.00000.98071.0000
6_51.00000.92061.00001.00000.97781.0000
a_10.03730.00000.00000.05170.00000.0000
a_20.00060.00000.00000.21090.84960.2000
a_30.00060.00000.00000.14760.80560.1333
a_40.03060.85440.23330.03060.85770.1667
a_50.03500.00000.00001.00000.92981.0000
b_10.54150.87580.46671.00000.97921.0000
b_21.00000.96461.00001.00000.98291.0000
b_31.00000.97911.00001.00000.98241.0000
b_41.00000.96821.00001.00000.97961.0000
b_51.00000.98431.00001.00000.98711.0000
c_10.00750.00000.00000.00860.79750.0333
c_20.52500.77520.50001.00000.88520.9000
c_30.00940.00000.00000.10690.59730.0667
c_40.13010.75860.06671.00000.86010.7667
c_51.00000.90491.00001.00000.92391.0000
d_11.00000.96531.00001.00000.95781.0000
d_20.32850.00000.00001.00000.93891.0000
d_30.26650.00000.00001.00000.90940.8333
d_40.28200.57370.06671.00000.97161.0000
d_50.29630.91760.03331.00000.97361.0000
nre_11.00000.88740.80001.00000.98181.0000
nre_20.66840.00000.00000.93810.89120.6667
nre_30.67120.00000.00001.00000.87030.8000
nre_40.55550.00000.00001.00000.92280.9667
nre_50.00000.00000.00001.00000.97961.0000
nrf_10.88800.00000.00001.00000.98751.0000
nrf_20.76320.00000.00001.00000.99001.0000
nrf_30.65780.00000.00001.00000.97991.0000
nrf_40.73540.00000.00001.00000.98521.0000
nrf_50.76240.00000.00000.94410.97020.0333
nrg_10.21340.00000.00000.40130.00000.0000
nrg_20.21000.00000.00000.22950.00000.0000
nrg_30.13450.00000.00000.21220.00000.0000
nrg_40.12340.00000.00000.25290.00000.0000
nrg_50.12450.00000.00000.23430.00000.0000
nrh_10.18760.00000.00000.23420.00000.0000
nrh_20.19840.00000.00000.23110.00000.0000
nrh_30.19760.00000.00000.25420.00000.0000
nrh_40.17640.00000.00000.21030.00000.0000
nrh_50.16480.00000.00000.22310.00000.0000