Journal of the Operational Research Society

TABLE 2

FROM:

Raw material inventory solution in iron and steel industry using Lagrangian relaxation

L Tang, G Liu and J Liu

BACK TO ARTICLE

Table 2. Average duality gap (%) of our method

Number of raw materials Number of raw material groups
 235810
40.016664    
60.7371730.096731   
80.0133340.040305   
100.0093910.0781860.476428  
200.0042030.0043710.0948180.8121370.722313
300.0036340.0050420.5047850.4559580.514772
400.0036760.0043810.0236360.4938230.369827
500.0038890.0094970.0082960.2124160.788269
600.0040540.0037730.0048270.3360610.331341
700.0032670.0037830.0315820.0985390.147511
800.0035970.0040740.0493040.1617720.106913
900.0037570.0043490.0048130.1067690.232951
1000.0040770.0039070.0045210.0054710.040730
1100.0035260.0236730.0041090.0521780.035269
1200.0033290.0039080.0047930.0046410.007379
1300.0034710.0045400.0039410.0050990.024059
1400.0037570.0038710.0038000.0054930.057286
1500.0037600.0031860.0794430.0725840.054176
1600.0031350.0035750.0684960.0130350.011364
1700.0032650.0030910.0042960.0048490.114604
1800.0037300.0034580.0635350.0245560.259759
1900.0034010.0035320.0042130.0130250.017685
2000.0034200.0030780.0042800.0074030.011008
BACK TO ARTICLE