<html><head><meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"><style>body { line-height: 1.5; }blockquote { margin-top: 0px; margin-bottom: 0px; margin-left: 0.5em; }div.foxdiv20151103160135363713 { }body { font-size: 10.5pt; font-family: 'Microsoft YaHei UI'; color: rgb(0, 0, 0); line-height: 1.5; }</style></head><body>
<div><span></span>Hi Matthias,</div><div><br></div><div>Thanks for your reply.</div><div><br></div><div>I did not attach all my model in the last email. I attach this model in this email.</div><div><br></div><div>The model is printed by <span style="font-family: ''; font-size: 10.5pt; line-height: 1.5; background-color: window;"> SCIP_CALL( SCIPwriteLP(scip, "N_initial_model.lp") ), in my code.</span></div><div><span style="font-family: ''; font-size: 10.5pt; line-height: 1.5; background-color: window;"><br></span></div><div>SCIP shows the objective value is 30 (see the picture I attached in my last email).</div><div><br></div><div>I checked all my code without finding any mistake.</div><div><br></div><div>Would like to give me some suggeations.</div><div><br></div><div>Best regard,</div><div><br></div><div>Kai Wei.</div>
<div><br></div>
<blockquote style="margin-top: 0px; margin-bottom: 0px; margin-left: 0.5em;"><div> </div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"><div style="PADDING-RIGHT: 8px; PADDING-LEFT: 8px; FONT-SIZE: 12px;FONT-FAMILY:tahoma;COLOR:#000000; BACKGROUND: #efefef; PADDING-BOTTOM: 8px; PADDING-TOP: 8px"><div><b>From:</b> <a href="mailto:miltenberger@zib.de">Matthias Miltenberger</a></div><div><b>Date:</b> 2015-11-03 15:55</div><div><b>To:</b> <a href="mailto:weikaimas@163.com">weikaimas@163.com</a></div><div><b>CC:</b> <a href="mailto:scip@zib.de">scip</a></div><div><b>Subject:</b> Re: [SCIP] A question about initial solution of branch and price.</div></div></div><div><div class="FoxDiv20151103160135363713">
Hey Kai Wei,<br>
<br>
I do not see how the model you described corresponds to the SCIP
output you sent us. Where are the 337 constraints coming from?<br>
I suppose there's something wrong in your own code.<br>
<br>
all the best<br>
Matthias<br>
<br>
<div class="moz-cite-prefix">On 03.11.2015 08:20, <a class="moz-txt-link-abbreviated" href="mailto:weikaimas@163.com">weikaimas@163.com</a>
wrote:<br>
</div>
<blockquote cite="mid:2015110315203400629521@163.com" type="cite" style="margin-top: 0px; margin-bottom: 0px; margin-left: 0.5em;">
<div><span></span><br>
</div>
<div>
<blockquote cite="mid:2015110314504541431417@163.com" type="cite" style="margin-top: 0px; margin-bottom: 0px; margin-left: 0.5em;">
<div>Hi, </div>
<div><span style="font-size: 10.5pt; line-height: 1.5;"> </span></div>
<div><span style="font-size: 10.5pt; line-height: 1.5;"> I
have a branch and price algorithm. I am facing a problem
when I set the initial solution.</span></div>
<div><span style="font-size: 10.5pt; line-height: 1.5;"><br>
</span></div>
<div>When I set the parameter to zero for each variable in
objective function, SCIP shows the primal bound is 30. </div>
<div><br>
</div>
<div>In my problem, the primal bound given by SCIP also 30
unit bigger than the real primal bound.</div>
<div><br>
</div>
<div>I don't know why this happens.</div>
<div>I attach the initial model and SCIP result in the
following.</div>
<div><br>
</div>
<div><span microsoft="" yahei="" ui'";="" font-size:="" 14px;="" color:="" rgb(0,="" 0,="" 0);="" background-color:="" rgba(0,="" font-weight:="" normal;="" font-style:="" normal;text-decoration:="" none;'="" style="font-family: '';">\ENCODING=ISO-8859-1<br>
\Problem name: mymodel<br>
<br>
Minimize<br>
obj:<br>
Subject To<br>
Constraint0: x_1_1 = 30<br>
Constraint1: x_2_1 = 10<br>
Constraint2: x_3_1 = 30<br>
Constraint3: x_4_1 = 19<br>
Constraint4: x_5_1 = 17<br>
Constraint5: x_6_1 = 22<br>
Constraint6: x_7_1 = 28<br>
Constraint7: x_8_1 = 21<br>
Constraint8: x_9_1 = 27<br>
Constraint9: x_10_1 = 20<br>
Constraint10: x_11_1 = 10<br>
Constraint11: x_12_1 = 21<br>
Constraint12: x_13_1 = 14<br>
Constraint13: x_14_1 = 11<br>
Constraint14: x_15_1 = 28<br>
Constraint15: x_16_1 = 21<br>
Constraint16: x_17_1 = 21<br>
Constraint17: x_18_1 = 20<br>
Constraint18: x_19_1 = 16<br>
Constraint19: x_20_1 = 24<br>
Constraint20: - RgConstraint20 = 0<br>
Constraint21: - RgConstraint21 = 0<br>
Constraint22: - RgConstraint22 = 0<br>
Constraint23: - RgConstraint23 = 0<br>
Constraint24: - RgConstraint24 = 0<br>
Constraint25: - RgConstraint25 = 0<br>
Constraint26: - RgConstraint26 = 0<br>
Constraint27: - RgConstraint27 = 0<br>
Constraint28: - RgConstraint28 = 0</span></div>
<div><br>
</div>
<div><img src="cid:_Foxmail.1@ddc2594c-ef5b-3a65-7a7a-27e3db272d6d" style="max-width: 100%; height: auto !important;" border="0"></div>
<div><span style="font-size: 10.5pt; line-height: 1.5;"><br>
</span></div>
<div><span style="font-size: 10.5pt; line-height: 1.5;">best
regard,</span></div>
<div><span style="font-size: 10.5pt; line-height: 1.5;"><br>
</span></div>
<div><span style="font-size: 10.5pt; line-height: 1.5;">Kai
Wei</span></div>
</blockquote>
</div>
<div>
<div><span style="font-size: 10.5pt; line-height: 1.5;"><br>
</span></div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
Scip mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Scip@zib.de">Scip@zib.de</a>
<a class="moz-txt-link-freetext" href="http://listserv.zib.de/mailman/listinfo/scip">http://listserv.zib.de/mailman/listinfo/scip</a>
</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
\__________________
Matthias Miltenberger
Zuse Institute Berlin
Takustr. 7, 14195 Berlin
<a class="moz-txt-link-abbreviated" href="http://www.zib.de/miltenberger">www.zib.de/miltenberger</a>
<a class="moz-txt-link-abbreviated" href="mailto:miltenberger@zib.de">miltenberger@zib.de</a>
+49 (30) 841 85-245</pre>
<div class="netease-attDown" style="width: 430px; height: auto; background-color: rgb(246, 249, 252); border: 1px solid rgb(197, 210, 218); padding: 12px; line-height: 160%; font-size: 12px; white-space: nowrap; font-family: Verdana;">
<div class="netease-attDown-tit" style="color: rgb(160, 160, 160);"> <strong style="color: rgb(0, 128, 0);">1</strong> attachments</div>
<dl style="margin: 0px; padding: 0px; width: 100%; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;">
<dt title="smime.p7s" style="margin: 8px 0px 0px; padding: 0px; width: 100%; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-weight: bold; color: rgb(51, 51, 51);">smime.p7s<span class="info" style="color: rgb(153, 153, 153); font-weight: normal;">(6K)</span></dt>
<dd style="margin: 0px; padding: 0px; width: 100%; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;">
<a href="http://preview.mail.163.com/xdownload?filename=smime.p7s&mid=1tbiNgqnw1WBPGJY0wAAsZ&part=4&sign=91aa5590858bc01953535ad15936bb3e&time=1446537564&uid=weikaimas%40163.com" target="_blank" style="color: rgb(6, 105, 178);">download</a>
</dd>
</dl>
</div>
</div></div></blockquote>
</body></html>