 FICO Xpress Optimization Examples Repository
 FICO Optimization Community FICO Xpress Optimization Home   Looping over optimization runs (within a model, batch executions, and multiple models/submodel)

Description
This example shows different possibilities of looping over a series of optimization runs using different data sets.
• In the first case (batch1.mos) the loop is implemented within a single Mosel model. At every loop execution a new data set is read and the model is redefined correspondingly.
• The second model (batch2.mos) only defines and solves once the optimization problem. It is run either from a batch file (runbatch2), or from an application using the Mosel Libraries (batch2.c), or as a submodel from a second Mosel model (runbatch2.mos) and receives the name of the data set to be used through a runtime parameter.

Source Files

Data Files

batch1.mos

```(!*******************************************************
Mosel Example Problems
======================

file batch1.mos
```````````````
Looping in the Mosel program over optimization runs
coupled with data in- and output.

(c) 2008 Fair Isaac Corporation
author: S.Heipcke, 2002, rev. 2017
*******************************************************!)

model "batch 1"
uses "mmxprs"

declarations
LIM=100
R=1..10
A,B: array(R) of real
x: array(R) of mpvar
ACtr,AnObj: linctr
end-declarations

forall(r in R) x(r) is_binary

forall(i in 0..2) do
! (Re-)initialize data from file
initializations from "batchdata"+i+".dat"
A as "a"   B as "b"
end-initializations

if(i>0) then
forall(r in R) B(r)+=1
end-if

! (Re-)assign constraints
ACtr:= sum(r in R) B(r)*x(r) <= LIM+i*10
AnObj:=sum(r in R) A(r)*x(r)

maximize(AnObj)
writeln("Objective: ", getobjval)

! Write out data to a file to be read at the next round
if(i<2) then
initializations to "batchdata"+(i+1)+".dat"
B as "b"
end-initializations
end-if

end-do

end-model

```   