Research Article

A Hybrid Simulated Annealing Heuristic for Multistage Heterogeneous Fleet Scheduling with Fleet Sizing Decisions

Table 6

Results for HSAH and CPLEX applied to large size problem with time limit imposed.

Problem size (freight terminal × vehicle types × time period)OFV (RMB)CPU time (second)
CPLEXHSAH

25614373592236631.5
27463083890437654.2
30125613962476691.0
33480214063582719.6
35857194298741767.9
36024764495476779.0
36804184586179839.1
37642924703167864.2
37910684698731899.6
38225164803164904.3
38493174829316932.5
38862034796317966.7
396504248506911043.2
400283750064791132.5
412534052679841164.6
419620557069141254.2
427356857846391275.6
430521758592171324.8
436220862639411396.1
438542666124761443.2
441271665690311504.1
447293067952131575.4
450281469482171614.5
457535671642061653.2
459832575012861741.8
462081976326891813.6
467336976936181856.8
470292380476031943.6
478552782677982066.2
483250983964192164.7