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<DIV><FONT face=Arial size=2>John,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Firstly, I want to print out the LP relaxed
solution at each node during the search, i.e. all variables assignment for the
problem. Secondly, I want to print out which variable is going to branch on, and
which branch is selected, for example, the variable x is chosen and assignment x
= 1, where the domain of x is [0,1]. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Spencer</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=jjforre@us.ibm.com href="mailto:jjforre@us.ibm.com">John J
Forrest</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=coin-discuss@list.coin-or.org
href="mailto:coin-discuss@list.coin-or.org">Discussions about open source
software for Operations Research</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, June 26, 2005 6:00 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Coin-discuss] How to trace
Cbc?</DIV>
<DIV><BR></DIV><BR><FONT face=sans-serif size=2>Spencer,</FONT> <BR><BR><FONT
face=sans-serif size=2>It is not finished but there is a class CbcStatistics.
</FONT> <BR><BR><FONT face=sans-serif size=2>If you use
branchAndBound(n) when n is 1 2 or 3 you will get increasing amounts of
printout. Tell me what sort of things you want.</FONT> <BR><BR><FONT
face=sans-serif size=2>Default is obviously 0 as it takes a lot of memory to
keep entire tree.</FONT> <BR><BR><FONT face=sans-serif size=2>At present it is
only printed but I will add other methods if useful.</FONT> <BR><BR><FONT
face=sans-serif size=2>John Forrest</FONT> <BR><BR><BR>
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<TD width="40%"><FONT face=sans-serif size=1><B>"Spencer Fung"
<sklfung@cse.cuhk.edu.hk></B> </FONT><BR><FONT face=sans-serif
size=1>Sent by: coin-discuss-bounces@list.coin-or.org</FONT>
<P><FONT face=sans-serif size=1>06/22/2005 03:23 PM</FONT>
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<DIV align=center><FONT face=sans-serif size=1>Please respond
to<BR>Discussions about open source software for Operations
Research
</FONT></DIV></TR></TBODY></TABLE><BR></P>
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<DIV align=right><FONT face=sans-serif size=1>To</FONT></DIV>
<TD vAlign=top><FONT face=sans-serif
size=1><coin-discuss@list.coin-or.org></FONT>
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<TD>
<DIV align=right><FONT face=sans-serif size=1>cc</FONT></DIV>
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<DIV align=right><FONT face=sans-serif size=1>Subject</FONT></DIV>
<TD vAlign=top><FONT face=sans-serif size=1>[Coin-discuss] How to
trace Cbc?</FONT></TR></TBODY></TABLE><BR>
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<TD></TR></TBODY></TABLE><BR></TR></TBODY></TABLE><BR><BR><BR><FONT face=Arial
size=1>Hi,</FONT> <BR><FONT face=Arial size=1> </FONT> <BR><FONT
face=Arial size=1>Does anyone know how to trace the branch-and-bound search
with Cbc? Actually, I want to know the following information at each variable
branch:</FONT> <BR><FONT face=Arial size=1> </FONT> <BR><FONT face=Arial
size=1>1.</FONT><FONT face="Times New Roman" size=1>
</FONT><FONT face=Arial size=1>The solution of the LP relaxation</FONT>
<BR><FONT face=Arial size=1>2.</FONT><FONT face="Times New Roman" size=1>
</FONT><FONT face=Arial size=1>The variable is being
branched</FONT> <BR><FONT face=Arial size=1>3.</FONT><FONT
face="Times New Roman" size=1> </FONT><FONT face=Arial
size=1>The direction of the branch (left or right?)</FONT> <BR><FONT
face=Arial size=1> </FONT> <BR><FONT face=Arial size=1>Also, what is the
default branching heuristic for Cbc?</FONT> <BR><FONT face=Arial
size=1> </FONT> <BR><FONT face=Arial size=1>Thanks.</FONT> <BR><FONT
face=Arial size=1> </FONT> <BR><FONT face=Arial
size=1>Spencer</FONT><FONT
size=2><TT>_______________________________________________<BR>Coin-discuss
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