From jiw508 at lehigh.edu Wed Nov 14 02:13:17 2012 From: jiw508 at lehigh.edu (Jiadong Wang) Date: Wed, 14 Nov 2012 02:13:17 -0500 Subject: [Vol] different results using two Vol examples Message-ID: I was trying Vol using executables in Vol example folder, for a miplib linstance rout.mps, to get lower bound of its LP. I guess these two should give the same results , more or less. Any insight? Thanks One is the VolLP, whose results does not make senes, ...... **** G= 0, Y= 0, R= 50 **** 1700. L=0.000000 P=0.000000 vu=-nan infeas=-nan asc=inf vmax=inf P-vu=-nan xrc =0.000000 **** G= 0, Y= 0, R= 50 **** 1750. L=0.000000 P=0.000000 vu=-nan infeas=-nan asc=inf vmax=inf P-vu=-nan xrc =0.000000 **** G= 0, Y= 0, R= 50 **** 1800. L=0.000000 P=0.000000 vu=-nan infeas=-nan asc=inf vmax=inf P-vu=-nan xrc =0.000000 **** G= 0, Y= 0, R= 50 **** 1850. L=0.000000 P=0.000000 vu=-nan infeas=-nan asc=inf vmax=inf P-vu=-nan xrc =0.000000 **** G= 0, Y= 0, R= 50 **** 1900. L=0.000000 P=0.000000 vu=-nan infeas=-nan asc=inf vmax=inf P-vu=-nan xrc =0.000000 **** G= 0, Y= 0, R= 50 **** 1950. L=0.000000 P=0.000000 vu=-nan infeas=-nan asc=inf vmax=inf P-vu=-nan xrc =0.000000 **** G= 0, Y= 0, R= 50 **** 2000. L=0.000000 P=0.000000 vu=-nan infeas=-nan asc=inf vmax=inf P-vu=-nan xrc =0.000000 **** G= 0, Y= 0, R= 50 **** 2001. L=0.000000 P=0.000000 vu=-nan infeas=-nan asc=inf vmax=inf P-vu=-nan xrc =0.000000 Best lagrangean value: 0.000000 Average primal constraint violation: -nan But the Volume-LP example, gives a reasonable results ........ 500. L=403.174961 P=403.527896 vu=-3.564675 infeas=0.000059 asc=498.000000 vmax=0.040422 P-vu=407.092570 xrc =4.016982 **** G= 0, Y= 2, R= 18 **** **** decreasing lamda to 0.000417536 ***** 520. L=403.355470 P=403.449490 vu=-3.070856 infeas=0.000059 asc=761.000000 vmax=0.030892 P-vu=406.520345 xrc =3.337415 **** G= 0, Y= 3, R= 17 **** 540. L=403.371622 P=403.759852 vu=-2.295101 infeas=0.000058 asc=846.000000 vmax=0.038478 P-vu=406.054953 xrc =2.778099 **** G= 0, Y= 4, R= 16 **** ------------decreasing alpha to 0.002500 560. L=403.373601 P=403.526743 vu=-2.135676 infeas=0.000054 asc=643.000000 vmax=0.038183 P-vu=405.662419 xrc =2.459017 **** G= 0, Y= 1, R= 19 **** small lp gap 575. L=403.410024 P=403.700934 vu=-1.823046 infeas=0.000036 asc=780.000000 vmax=0.019974 P-vu=405.523980 xrc =2.262001 Average violation of final solution: 0.000386192 Total Time: 1.82 secs -- Jiadong Wang Harold S. Mohler Laboratory Lehigh University 200 West Packer Avenue Bethlehem, PA 18015-1582 Phone No: 484-707-8895 -------------- next part -------------- An HTML attachment was scrubbed... URL: