topic Re: AssetMix_Contd_CreateDataStep in Mathematical Optimization, Discrete-Event Simulation, and OR

AssetMix_Contd_CreateDataStep

Santha — Fri, 01 Jul 2022 02:20:13 GMT

Hi Rob

This is the create data step , continued from AssetMixproblem.

I want to see in my outputs the PerBox Cost and Per Vol costs so that I can play it back to the end user. I understand that for the modeling we have omitted Vol_ISN[i] for PerVolbased costs. This helps to get to the right answer directionally. But when i want to play it back , i want the PerVol based costs to include Vol_ISN[i] in my outputs. Here is what I have in my Create data step at the end of the model. Can you help me to get the right syntax.

create data CASUSER.OptMix_RESULTS (where=(BoxesNeeded > 0.0000001)) from
[ISN=i BOX=b]
Org=ORG_ISN[i]
Des=DES_ISN[i]
ShipmentVolume=Vol_ISN[i]
ShipmentWeight=Wt_ISN[i]
BoxesNeeded
Volume_Capacity[Org_ISN[i],Des_ISN[i],b]
Wt_Capacity[Org_ISN[i],Des_ISN[i],b]
BoxBasedCosts=(PerBox_Based_Rate[Org_ISN[i],Des_ISN[i],b] * sum (BoxesNeeded [i,b]))
VolBasedCosts=(PerVol_Based_Rate[Org_ISN[i],Des_ISN[i],b] * Vol_ISN*BoxesNeeded[i,b]);
;

The BoxBasedCosts and VolBasedCosts above - I think i did not do it correctly because for BoxBasedCosts, there is no LCL and so how do I specify it inside the create data step to include only those where we have a rate for PerBoxRate, similar to how we declared:

impvar PerBox_Based_Costs = sum {i in ISN, b in BOX: <Org_ISN[i],Des_ISN[i],b> in PerBox_Based_Rate_NoZeroes}
PerBox_Based_Rate[Org_ISN[i],Des_ISN[i],b] * BoxesNeeded[i,b];

The same case for PerVol_Based_Costs as well how to do that correctly in create data step.

Another thing that I would like to see in output table, is in this sample shipment that we used ISN='SHA_SEA_10' with 30 Volume, how much volume was stuffed in 20F container and how much volume was stuffed in LCL. This will be useful when I measure utilization of Boxes later on.

Re: AssetMix_Contd_CreateDataStep

RobPratt — Fri, 01 Jul 2022 02:49:26 GMT

I think the following two CREATE DATA statements do what you want:

   create data OptMix_RESULTS_box (where=(BoxesNeeded > 0.05)) from
      [ISN=i BOX=b]={i in ISN, b in BOX: <Org_ISN[i],Des_ISN[i],b> in PerBox_Based_Rate_NoZeroes}
      Org=ORG_ISN[i]
      Des=DES_ISN[i]
      ShipmentVolume=Vol_ISN[i]
      ShipmentWeight=Wt_ISN[i]
      BoxesNeeded
      Volume_Capacity[Org_ISN[i],Des_ISN[i],b]
      Wt_Capacity[Org_ISN[i],Des_ISN[i],b]
      BoxBasedCosts=(PerBox_Based_Rate[Org_ISN[i],Des_ISN[i],b] * BoxesNeeded[i,b])
      VolumeUsed=(Volume_Capacity[Org_ISN[i],Des_ISN[i],b] * BoxesNeeded[i,b])
   ;
   create data OptMix_RESULTS_vol (where=(BoxesNeeded > 0.05)) from
      [ISN=i BOX=b]={i in ISN, b in BOX: <Org_ISN[i],Des_ISN[i],b> in PerVol_Based_Rate_NoZeroes}
      Org=ORG_ISN[i]
      Des=DES_ISN[i]
      ShipmentVolume=Vol_ISN[i]
      ShipmentWeight=Wt_ISN[i]
      BoxesNeeded
      Volume_Capacity[Org_ISN[i],Des_ISN[i],b]
      Wt_Capacity[Org_ISN[i],Des_ISN[i],b]
      VolBasedCosts=(PerVol_Based_Rate[Org_ISN[i],Des_ISN[i],b] * BoxesNeeded[i,b])
      VolumeUsed=(Volume_Capacity[Org_ISN[i],Des_ISN[i],b] * BoxesNeeded[i,b])
   ;

Re: AssetMix_Contd_CreateDataStep

Santha — Fri, 01 Jul 2022 05:29:40 GMT

OptMix_RESULTS_vol

Hi Rob

Thank you. I was thinking of having one table but what you have is great. one for each type. then can i merge them together in 1 table (with box based and vol based sitting in the same column called Costs and Costtype to distinhuis if it is box or vol probably?

OptMix_RESULTS_box