| ugcompfrmemcs.cs |
/********************************************************
Mosel User Guide Example Problems
=================================
file ugcompfrmem.cs
```````````````````
Retrieve model output via callback-style functionality.
(c) 2013 Fair Isaac Corporation
author: S.Heipcke, Mar. 2013
J.Farmer, Mar. 2021
********************************************************/
using System;
using System.IO;
using Mosel;
namespace ugcompfrmem.cs {
public class ugcompfrmem {
/// <summary>
/// String containing the model
/// </summary>
const string modelSource=
"model Burglar\n"+
"uses 'mmxprs'\n"+
"declarations\n"+
" WTMAX = 102 ! Maximum weight allowed\n"+
" ITEMS = 1..8 ! Index range for items\n"+
" VALUE: array(ITEMS) of real ! Value of items\n"+
" WEIGHT: array(ITEMS) of real ! Weight of items\n"+
" take: array(ITEMS) of mpvar ! 1 if we take item i; 0 otherwise\n"+
"end-declarations\n"+
"VALUE :: [15, 100, 90, 60, 40, 15, 10, 1]\n"+
"WEIGHT:: [ 2, 20, 20, 30, 40, 30, 60, 10]\n"+
"! Objective: maximize total value\n"+
"MaxVal:= sum(i in ITEMS) VALUE(i)*take(i)\n"+
"! Weight restriction\n"+
"sum(i in ITEMS) WEIGHT(i)*take(i) <= WTMAX\n"+
"! All variables are 0/1\n"+
"forall(i in ITEMS) take(i) is_binary\n"+
"maximize(MaxVal) ! Solve the problem\n"+
"! Print out the solution\n"+
"writeln(\"Solution:\\n Objective: \", getobjval)\n"+
"forall(i in ITEMS) writeln(' take(', i, '): ', getsol(take(i)))\n"+
"end-model";
/// <summary>
/// Main entry point for the application
/// </summary>
[STAThread]
static void Main(string[] args) {
// Initialize Mosel
XPRM mosel = XPRM.Init();
// Compile the Mosel model to a physical file
FileStream file= new FileStream("burglar2.bim", FileMode.Create,
FileAccess.Write);
mosel.Compile("", new StringReader(modelSource), file);
file.Close();
// Load the Mosel model
XPRMModel model = mosel.LoadModel("burglar2.bim");
// Alternative version: compile+load without writing the BIM
// XPRMModel model = mosel.CompileAndLoad(new StringReader(modelSource));
// Run the model
model.Run();
}
}
}
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| ugcompfrmemcs.csproj |
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net5.0</TargetFramework>
<IsPackable>false</IsPackable>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="FICO.Xpress.XPRMdn" Version="5.6.1" />
</ItemGroup>
</Project>
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| ugcompfrmem.mos |
(!******************************************************
Mosel User Guide Example Problems
=================================
file ugcompfrmem.mos
````````````````````
Compilation from memory.
(c) 2014 Fair Isaac Corporation
author: S. Heipcke, Sep. 2014
*******************************************************!)
model "Compile burglar.mos from memory"
uses "mmjobs", "mmsystem"
!**** The source of the submodel as a multi-line string ****
public declarations
source_of_model=`SUBMODELSOURCE
model Burglar
uses 'mmxprs'
declarations
WTMAX = 102 ! Maximum weight allowed
ITEMS = 1..8 ! Index range for items
VALUE: array(ITEMS) of real ! Value of items
WEIGHT: array(ITEMS) of real ! Weight of items
take: array(ITEMS) of mpvar ! 1 if we take item i; 0 otherwise
end-declarations
VALUE :: [15, 100, 90, 60, 40, 15, 10, 1]
WEIGHT:: [ 2, 20, 20, 30, 40, 30, 60, 10]
! Objective: maximize total value
MaxVal:= sum(i in ITEMS) VALUE(i)*take(i)
! Weight restriction
sum(i in ITEMS) WEIGHT(i)*take(i) <= WTMAX
! All variables are 0/1
forall(i in ITEMS) take(i) is_binary
maximize(MaxVal) ! Solve the problem
! Print out the solution
writeln("Solution:\n Objective: ", getobjval)
forall(i in ITEMS) writeln(' take(', i, '): ', getsol(take(i)))
end-model
SUBMODELSOURCE`
end-declarations
!**** Main model ****
declarations
modBurg: Model
end-declarations
! Compile the model from memory
if compile("", "text:source_of_model", "tmp:burglar.bim")<>0 then
exit(1)
end-if
load(modBurg, "tmp:burglar.bim") ! Load the bim file
run(modBurg) ! Start model execution
wait ! Wait for model termination
dropnextevent ! Ignore termination event message
end-model
|
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| ugcompmemcs.cs |
/********************************************************
Mosel User Guide Example Problems
=================================
file ugcompmem.cs
`````````````````
Compiling a model to memory.
(c) 2013 Fair Isaac Corporation
author: S.Heipcke, Mar. 2013
J.Farmer, Jul. 2019, rev. May. 2021
********************************************************/
using System;
using System.IO;
using Mosel;
namespace ugcompmem.cs {
public class ugcompmem {
/// <summary>
/// Main entry point for the application
/// </summary>
[STAThread]
static void Main(string[] args) {
// Initialize Mosel
XPRM mosel = XPRM.Init();
// Set Mosel work directory to folder containing our example files
mosel.WorkDir = Directory.GetParent(System.Reflection.Assembly.GetExecutingAssembly().Location).FullName;
// Compile the Mosel model to a MemoryStream
MemoryStream bimStream = new MemoryStream();
mosel.Compile("",mosel.WorkDir+"/burglar2.mos",bimStream);
// Reset stream pointer to beginning so we can read the bytes we've just written
bimStream.Seek(0,SeekOrigin.Begin);
// Load the Mosel model
XPRMModel model;
mosel.Bind("bimblk", bimStream);
try {
model = mosel.LoadModel("dotnet:bimblk");
} finally {
mosel.Unbind("bimblk");
}
// Run the model
model.Run();
}
}
}
|
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| ugcompmemcs.csproj |
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net5.0</TargetFramework>
<IsPackable>false</IsPackable>
</PropertyGroup>
<ItemGroup>
<Content Include="../burglar.dat" CopyToOutputDirectory="Always" />
<Content Include="../burglar2.mos" CopyToOutputDirectory="Always" />
</ItemGroup>
<ItemGroup>
<PackageReference Include="FICO.Xpress.XPRMdn" Version="5.6.1" />
</ItemGroup>
</Project>
|
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| ugcompmem.mos |
(!******************************************************
Mosel User Guide Example Problems
=================================
file ugcompmem.mos
``````````````````
Compilation a model to memory.
(c) 2014 Fair Isaac Corporation
author: S. Heipcke, Sep. 2014
*******************************************************!)
model "Compile burglar.mos to memory"
uses "mmjobs", "mmsystem"
declarations
modBurg: Model
end-declarations
! Compile the model to memory
if compile("", "burglar2.mos", "mem:bimfile")<>0 then exit(1); end-if
load(modBurg, "mem:bimfile") ! Load the bim file
fdelete("mem:bimfile")
run(modBurg) ! Start model execution
wait ! Wait for model termination
dropnextevent ! Ignore termination event message
end-model
|
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| burglar2.mos |
(!******************************************************
Mosel User Guide Example Problems
=================================
file burglar2.mos
`````````````````
Use of index sets.
(c) 2008 Fair Isaac Corporation
author: S. Heipcke, 2001, rev. 2006
*******************************************************!)
model Burglar2
uses "mmxprs"
declarations
WTMAX = 102 ! Maximum weight allowed
ITEMS = {"camera", "necklace", "vase", "picture", "tv", "video",
"chest", "brick"} ! Index set for items
VALUE: array(ITEMS) of real ! Value of items
WEIGHT: array(ITEMS) of real ! Weight of items
take: array(ITEMS) of mpvar ! 1 if we take item i; 0 otherwise
end-declarations
initializations from 'burglar.dat'
VALUE WEIGHT
end-initializations
! Objective: maximize total value
MaxVal:= sum(i in ITEMS) VALUE(i)*take(i)
! Weight restriction
sum(i in ITEMS) WEIGHT(i)*take(i) <= WTMAX
! All variables are 0/1
forall(i in ITEMS) take(i) is_binary
maximize(MaxVal) ! Solve the MIP-problem
! Print out the solution
writeln("Solution:\n Objective: ", getobjval)
forall(i in ITEMS) writeln(" take(", i, "): ", getsol(take(i)))
end-model
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