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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi Mario,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> here are some answers:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>1. Yes, that is possible.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>2. You can output the problem in MPS format or 'lp format'. See
the recent mails on the list about how to do this.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>3.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>4. You cant. Flopc++ can only be used to model LPs and will not
allow you to divide with an expression involving decision variables.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>5.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>6. <o:p></o:p></span></p>
<table class=MsoNormalTable border=1 cellspacing=0 cellpadding=0 width="100%"
style='width:100.0%;border-collapse:collapse;border:none'>
<tr>
<td valign=top style='border:solid #DDDDDD 1.0pt;border-bottom:none;
background:white;padding:.75pt 1.5pt .75pt 1.5pt'>
<p class=MsoNormal style='line-height:130%'><b><span style='font-size:8.5pt;
line-height:130%;font-family:"Courier New";color:#445588'>void</span></b><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'> MP_constraint<b>::</b>display</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>(</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>string
s</span><span style='font-size:8.5pt;line-height:130%;font-family:"Courier New";
color:black'>)</span><span style='font-size:8.5pt;line-height:130%;
font-family:"Courier New";color:black'> <b>const</b> </span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>{</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'><o:p></o:p></span></p>
</td>
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<tr>
<td valign=top style='border-top:none;border-left:solid #DDDDDD 1.0pt;
border-bottom:solid #999988 1.0pt;border-right:solid #D7D7D7 1.0pt;
background:#EEEEDD;padding:0cm 6.0pt 0cm 6.0pt'>
<p class=MsoNormal align=right style='text-align:right;line-height:130%'><span
style='font-size:8.5pt;line-height:130%;font-family:"Verdana","sans-serif";
color:#888866'><a href="javascript:setLineNum(89)"><span style='color:#888866;
border:none windowtext 1.0pt;padding:0cm;text-decoration:none'>89</span></a><o:p></o:p></span></p>
</td>
<td valign=top style='border:none;border-right:solid #DDDDDD 1.0pt;
background:white;padding:.75pt 1.5pt .75pt 1.5pt'>
<p class=MsoNormal style='line-height:130%'><span style='font-size:8.5pt;
line-height:130%;font-family:"Courier New";color:black'> cout<b><<</b>s<b><<</b>endl</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>;</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'><o:p></o:p></span></p>
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<td valign=top style='border-top:none;border-left:solid #DDDDDD 1.0pt;
border-bottom:solid #999988 1.0pt;border-right:solid #D7D7D7 1.0pt;
background:#EEEEDD;padding:0cm 6.0pt 0cm 6.0pt'>
<p class=MsoNormal align=right style='text-align:right;line-height:130%'><span
style='font-size:8.5pt;line-height:130%;font-family:"Verdana","sans-serif";
color:#888866'><a href="javascript:setLineNum(90)"><span style='color:#888866;
border:none windowtext 1.0pt;padding:0cm;text-decoration:none'>90</span></a><o:p></o:p></span></p>
</td>
<td valign=top style='border:none;border-right:solid #DDDDDD 1.0pt;
background:white;padding:.75pt 1.5pt .75pt 1.5pt'>
<p class=MsoNormal style='line-height:130%'><span style='font-size:8.5pt;
line-height:130%;font-family:"Courier New";color:black'> <b>if</b> </span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>(</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>offset
<b>>=</b></span><span style='font-size:8.5pt;line-height:130%;font-family:
"Courier New";color:#009999'>0</span><span style='font-size:8.5pt;line-height:
130%;font-family:"Courier New";color:black'>)</span><span style='font-size:
8.5pt;line-height:130%;font-family:"Courier New";color:black'> </span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>{</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td valign=top style='border-top:none;border-left:solid #DDDDDD 1.0pt;
border-bottom:solid #999988 1.0pt;border-right:solid #D7D7D7 1.0pt;
background:#EEEEDD;padding:0cm 6.0pt 0cm 6.0pt'>
<p class=MsoNormal align=right style='text-align:right;line-height:130%'><span
style='font-size:8.5pt;line-height:130%;font-family:"Verdana","sans-serif";
color:#888866'><a href="javascript:setLineNum(91)"><span style='color:#888866;
border:none windowtext 1.0pt;padding:0cm;text-decoration:none'>91</span></a><o:p></o:p></span></p>
</td>
<td valign=top style='border:none;border-right:solid #DDDDDD 1.0pt;
background:white;padding:.75pt 1.5pt .75pt 1.5pt'>
<p class=MsoNormal style='line-height:130%'><span style='font-size:8.5pt;
line-height:130%;font-family:"Courier New";color:black'> <b>for</b> </span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>(</span><b><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:#445588'>int</span></b><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'> i<b>=</b>offset</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>;</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'> i<b><</b>offset<b>+</b>size</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>();</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'> i<b>++</b></span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>)</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'> </span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>{</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'><o:p></o:p></span></p>
</td>
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<tr>
<td valign=top style='border-top:none;border-left:solid #DDDDDD 1.0pt;
border-bottom:solid #999988 1.0pt;border-right:solid #D7D7D7 1.0pt;
background:#EEEEDD;padding:0cm 6.0pt 0cm 6.0pt'>
<p class=MsoNormal align=right style='text-align:right;line-height:130%'><span
style='font-size:8.5pt;line-height:130%;font-family:"Verdana","sans-serif";
color:#888866'><a href="javascript:setLineNum(92)"><span style='color:#888866;
border:none windowtext 1.0pt;padding:0cm;text-decoration:none'>92</span></a><o:p></o:p></span></p>
</td>
<td valign=top style='border:none;border-right:solid #DDDDDD 1.0pt;
background:white;padding:.75pt 1.5pt .75pt 1.5pt'>
<p class=MsoNormal style='line-height:130%'><span style='font-size:8.5pt;
line-height:130%;font-family:"Courier New";color:black'>
cout<b><<</b>i<b><<</b></span><span style='font-size:8.5pt;
line-height:130%;font-family:"Courier New";color:#BB8844'>" "</span><b><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'><<</span></b><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>M<b>-></b>bl</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>[</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>i</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>]</span><b><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'><<</span></b><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:#BB8844'>"
"</span><b><span style='font-size:8.5pt;line-height:130%;font-family:
"Courier New";color:black'><<</span></b><span style='font-size:8.5pt;
line-height:130%;font-family:"Courier New";color:black'>M<b>-></b>rowActivity</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>[</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>i</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>]</span><b><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'><<</span></b><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:#BB8844'>"
"</span><b><span style='font-size:8.5pt;line-height:130%;font-family:
"Courier New";color:black'><<</span></b><span style='font-size:8.5pt;
line-height:130%;font-family:"Courier New";color:black'>M<b>-></b>bu</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>[</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>i</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>]</span><b><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'><<</span></b><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:#BB8844'>"
"</span><b><span style='font-size:8.5pt;line-height:130%;font-family:
"Courier New";color:black'><<</span></b><span style='font-size:8.5pt;
line-height:130%;font-family:"Courier New";color:black'>M<b>-></b>rowPrice</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>[</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>i</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>]</span><b><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'><<</span></b><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>endl</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>;</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'><o:p></o:p></span></p>
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<tr>
<td valign=top style='border-top:none;border-left:solid #DDDDDD 1.0pt;
border-bottom:solid #999988 1.0pt;border-right:solid #D7D7D7 1.0pt;
background:#EEEEDD;padding:0cm 6.0pt 0cm 6.0pt'>
<p class=MsoNormal align=right style='text-align:right;line-height:130%'><span
style='font-size:8.5pt;line-height:130%;font-family:"Verdana","sans-serif";
color:#888866'><a href="javascript:setLineNum(93)"><span style='color:#888866;
border:none windowtext 1.0pt;padding:0cm;text-decoration:none'>93</span></a><o:p></o:p></span></p>
</td>
<td valign=top style='border:none;border-right:solid #DDDDDD 1.0pt;
background:white;padding:.75pt 1.5pt .75pt 1.5pt'>
<p class=MsoNormal style='line-height:130%'><span style='font-size:8.5pt;
line-height:130%;font-family:"Courier New";color:black'> </span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>}</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'><o:p></o:p></span></p>
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<tr>
<td valign=top style='border-top:none;border-left:solid #DDDDDD 1.0pt;
border-bottom:solid #999988 1.0pt;border-right:solid #D7D7D7 1.0pt;
background:#EEEEDD;padding:0cm 6.0pt 0cm 6.0pt'>
<p class=MsoNormal align=right style='text-align:right;line-height:130%'><span
style='font-size:8.5pt;line-height:130%;font-family:"Verdana","sans-serif";
color:#888866'><a href="javascript:setLineNum(94)"><span style='color:#888866;
border:none windowtext 1.0pt;padding:0cm;text-decoration:none'>94</span></a><o:p></o:p></span></p>
</td>
<td valign=top style='border:none;border-right:solid #DDDDDD 1.0pt;
background:white;padding:.75pt 1.5pt .75pt 1.5pt'>
<p class=MsoNormal style='line-height:130%'><span style='font-size:8.5pt;
line-height:130%;font-family:"Courier New";color:black'> </span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>}</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'> <b>else</b> </span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>{</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'><o:p></o:p></span></p>
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<tr>
<td valign=top style='border-top:none;border-left:solid #DDDDDD 1.0pt;
border-bottom:solid #999988 1.0pt;border-right:solid #D7D7D7 1.0pt;
background:#EEEEDD;padding:0cm 6.0pt 0cm 6.0pt'>
<p class=MsoNormal align=right style='text-align:right;line-height:130%'><span
style='font-size:8.5pt;line-height:130%;font-family:"Verdana","sans-serif";
color:#888866'><a href="javascript:setLineNum(95)"><span style='color:#888866;
border:none windowtext 1.0pt;padding:0cm;text-decoration:none'>95</span></a><o:p></o:p></span></p>
</td>
<td valign=top style='border:none;border-right:solid #DDDDDD 1.0pt;
background:white;padding:.75pt 1.5pt .75pt 1.5pt'>
<p class=MsoNormal style='line-height:130%'><span style='font-size:8.5pt;
line-height:130%;font-family:"Courier New";color:black'>
cout<b><<</b></span><span style='font-size:8.5pt;line-height:130%;
font-family:"Courier New";color:#BB8844'>"No solution available!"</span><b><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'><<</span></b><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>endl</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>;</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'><o:p></o:p></span></p>
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<tr>
<td valign=top style='border-top:none;border-left:solid #DDDDDD 1.0pt;
border-bottom:solid #999988 1.0pt;border-right:solid #D7D7D7 1.0pt;
background:#EEEEDD;padding:0cm 6.0pt 0cm 6.0pt'>
<p class=MsoNormal align=right style='text-align:right;line-height:130%'><span
style='font-size:8.5pt;line-height:130%;font-family:"Verdana","sans-serif";
color:#888866'><a href="javascript:setLineNum(96)"><span style='color:#888866;
border:none windowtext 1.0pt;padding:0cm;text-decoration:none'>96</span></a><o:p></o:p></span></p>
</td>
<td valign=top style='border:none;border-right:solid #DDDDDD 1.0pt;
background:white;padding:.75pt 1.5pt .75pt 1.5pt'>
<p class=MsoNormal style='line-height:130%'><span style='font-size:8.5pt;
line-height:130%;font-family:"Courier New";color:black'> </span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'>}</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'><o:p></o:p></span></p>
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<tr>
<td valign=top style='border-top:none;border-left:solid #DDDDDD 1.0pt;
border-bottom:solid #999988 1.0pt;border-right:solid #D7D7D7 1.0pt;
background:#EEEEDD;padding:0cm 6.0pt 0cm 6.0pt'>
<p class=MsoNormal align=right style='text-align:right;line-height:130%'><span
style='font-size:8.5pt;line-height:130%;font-family:"Verdana","sans-serif";
color:#888866'><a href="javascript:setLineNum(97)"><span style='color:#888866;
border:none windowtext 1.0pt;padding:0cm;text-decoration:none'>97</span></a><o:p></o:p></span></p>
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<td valign=top style='border-top:none;border-left:none;border-bottom:solid #DDDDDD 1.0pt;
border-right:solid #DDDDDD 1.0pt;background:white;padding:.75pt 1.5pt .75pt 1.5pt'>
<p class=MsoNormal style='line-height:130%'><span style='font-size:8.5pt;
line-height:130%;font-family:"Courier New";color:black'>}</span><span
style='font-size:8.5pt;line-height:130%;font-family:"Courier New";color:black'><o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I know I didn’t answer everthing, but I have to go now..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Tim<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> flopcpp-bounces@list.coin-or.org
[mailto:flopcpp-bounces@list.coin-or.org] <b>On Behalf Of </b>Mario Rappi<br>
<b>Sent:</b> Sunday, November 29, 2009 2:47 AM<br>
<b>To:</b> flopcpp@list.coin-or.org<br>
<b>Subject:</b> [FlopCpp] wrote first flopcpp model. have a lot of questions<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>First I include the model, then the output, and at the end
the questions:<br>
<br>
*****model************************<br>
// $Id$<br>
#include "flopc.hpp"<br>
using namespace flopc;<br>
#include <OsiClpSolverInterface.hpp><br>
<br>
int main() {<br>
<br>
MP_model &model = MP_model::getDefaultModel();<br>
model.setSolver(new OsiClpSolverInterface);<br>
model.verbose();<br>
<br>
enum {storeA, storeB, storeC, storeD, numS}; <br>
enum {Input1, Input2, numI};<br>
enum {Output1, numO};<br>
<br>
MP_set
S(numS); // Stores<br>
MP_set I(numI);
// Inputs<br>
MP_set O(numO);
// Outputs<br>
<br>
MP_subset<2> Input(S,I);<br>
Input.insert(S,I);<br>
Input.display("Input");<br>
MP_subset<2> Output(S,O);<br>
Output.insert(S,O);<br>
Output.display("Output");<br>
<br>
//this will be easier with an array??<br>
MP_data InputVal(Input);<br>
InputVal(storeA,Input1)=1; InputVal(storeA,Input2)=3;<br>
InputVal(storeB,Input1)=3; InputVal(storeB,Input2)=3;<br>
InputVal(storeC,Input1)=4; InputVal(storeC,Input2)=2;<br>
InputVal(storeD,Input1)=3; InputVal(storeD,Input2)=1;<br>
<br>
MP_data OutputVal(Output);<br>
OutputVal(storeA,Output1)=1;<br>
OutputVal(storeB,Output1)=1.5;<br>
OutputVal(storeC,Output1)=2;<br>
OutputVal(storeD,Output1)=1;<br>
<br>
MP_variable x(I), y(O);<br>
x.lowerLimit(I)=0;<br>
y.lowerLimit(O)=0;<br>
<br>
MP_constraint efficiency(S);<br>
efficiency(S) = sum(I, InputVal(S, I) * x(I)) <= sum(O,
OutputVal(S, O) * y(O));<br>
<br>
minimize( (sum(O, OutputVal(storeB, O) * y(O))) - (sum(I,
InputVal(storeB, I) * x(I))));<br>
<br>
efficiency.display("constraints");<br>
x.display("x");<br>
y.display("y");<br>
<br>
cout<<"Test dea passed."<<endl;<br>
}<br>
*****model end************************<br>
<br>
*****output************************<br>
Input<br>
Output<br>
FlopCpp: Constraint <br>
0 1 0 0<br>
1 1 0 0<br>
2 1 0 0<br>
3 1 0 0<br>
0 2 0 0<br>
1 2 0 0<br>
2 2 0 0<br>
3 2 0 0<br>
0 0 -0 0<br>
1 0 -0 0<br>
2 0 -0 0<br>
3 0 -0 0<br>
FlopCpp: Number of constraint blocks: 1<br>
FlopCpp: Number of individual constraints: 4<br>
FlopCpp: Number of variable blocks: 2<br>
FlopCpp: Number of individual variables: 3<br>
FlopCpp: Number of non-zeroes (including rhs): 12<br>
Objective <br>
-1 0 0<br>
-1 1 -0<br>
-1 2 -0<br>
FlopCpp: Generation time: -2.64274e-19<br>
Clp0000I Optimal - objective value 0<br>
Clp0032I Optimal objective 0 - 0 iterations time 0.002<br>
FlopCpp: Optimal obj. value = 0<br>
FlopCpp: Solver(m, n, nz) = 4 3 0<br>
constraints<br>
0 -1.79769e+308 0 0 -0<br>
1 -1.79769e+308 0 0 -0<br>
2 -1.79769e+308 0 0 -0<br>
3 -1.79769e+308 0 0 -0<br>
x<br>
0 0<br>
1 0<br>
y<br>
0 0<br>
Test dea passed.<br>
*****output end************************<br>
<br>
*****Questions:******************<br>
I would like to define a set A that includes all members of O and I and then
derive O and I from A.<br>
This is what I am thinking in GAMS terms:<br>
A / Input1, Input2, Output1 /<br>
O(A) / Input1, Input2 /<br>
I(A) / Output1 /<br>
Is this possible?. I thought it would allow me to write the model more easily
(but may be not)<br>
*******************<br>
I tried to display the constraints but I didn't get what I was expecting (the
actual mathematical expression). Is it possible to see the constraints in any
other way?<br>
*******************<br>
When I compile I get the following two warnings. Should I be concerned? How do
I fix them?<br>
<br>
c:\program files\coin-flopcpp\flopcpp\src\mp_set.hpp(259) : warning C4267:
'return' : conversion from 'size_t' to 'int', possible loss of data<br>
c:\program files\coin-flopcpp\flopcpp\src\mp_set.hpp(258)
: while compiling class template member function 'int
flopc::MP_subset<nbr>::size(void) const'<br>
with<br>
[<br>
nbr=2<br>
]<br>
c:\program
files\coin-flopcpp\flopcpp\examples\dea.cpp(21) : see reference to class
template instantiation 'flopc::MP_subset<nbr>' being compiled<br>
with<br>
[<br>
nbr=2<br>
]<br>
c:\program files\coin-flopcpp\flopcpp\src\mp_set.hpp(243) : warning C4267:
'initializing' : conversion from 'size_t' to 'const int', possible loss of data<br>
c:\program
files\coin-flopcpp\flopcpp\src\mp_set.hpp(232) : while compiling class template
member function 'void flopc::MP_subset<nbr>::insert(const
std::vector<_Ty> &)'<br>
with<br>
[<br>
nbr=2,<br>
_Ty=int<br>
]<br>
<br>
*******************<br>
The objective function that I really want to use is<br>
maximize( (sum(O, OutputVal(storeB, O) * y(O))) / (sum(I, InputVal(storeB, I) *
x(I))));<br>
But it doesn't compile, I get this error:<br>
<br>
c:\program files\coin-flopcpp\flopcpp\examples\dea.cpp(51) : error C2678:
binary '/' : no operator found which takes a left-hand operand of type
'flopc::MP_expression' (or there is no acceptable conversion)<br>
c:\program
files\coin-flopcpp\flopcpp\src\mp_constant.hpp(141): could be 'flopc::Constant
flopc::operator /(const flopc::Constant &,const flopc::Constant &)'<br>
c:\program
files\coin-flopcpp\coinutils\src\coinpackedvector.hpp(483):
or 'CoinPackedVector operator /(const
CoinPackedVectorBase &,const CoinPackedVectorBase &)'<br>
c:\program
files\coin-flopcpp\coinutils\src\coinpackedvector.hpp(583):
or 'CoinPackedVector operator /(const
CoinPackedVectorBase &,double)'<br>
c:\program
files\coin-flopcpp\coinutils\src\coinpackedvector.hpp(625): or
'CoinPackedVector operator /(double,const CoinPackedVectorBase &)'<br>
while trying to match the argument
list '(flopc::MP_expression, flopc::MP_expression)'<br>
<br>
I am using MSVCPP, I read of some problems specific to VCPP so I tried the same
in Linux(I think it is build-essential in Ubuntu) but I get the same errors.<br>
How can I fix this problem with the division operation?<br>
*******************<br>
Is my formulation of the objective function OK in how I sum only for storeB or
do I have to use such_that or any other type of control?<br>
How do I display the objective function?<br>
*******************<br>
What are these numbers in the output?<br>
constraints<br>
0 -1.79769e+308 0 0 -0<br>
1 -1.79769e+308 0 0 -0<br>
2 -1.79769e+308 0 0 -0<br>
3 -1.79769e+308 0 0 -0<br>
My four constraints are supposed to have only three terms (two on the left and
one on the right)<br>
********************<br>
What is this?<br>
Objective <br>
-1 0 0<br>
-1 1 -0<br>
-1 2 -0<br>
********************<br>
<br>
If it helps at all: the model is a simple DEA formulation (primal).<br>
I understand some of my questions may be more C++ than flopcpp questions but I
can't tell.<br>
I will appreciate help on any of these questions and on any other comments you
may have on the model formulation.<br>
Thanks in advance.<br>
Mario<o:p></o:p></p>
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