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<p>Hello Tony,</p>
<p><br>
</p>
<p>about your first point. It is the responsibility of the
separators to check the minefficacy because some constraint
handlers might want to add cuts to the sepastore that are
necessary to enforce their constraints but are violated below
minefficacy.<br>
</p>
<p><br>
</p>
<p>Best,<br>
Leona</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 8/14/19 4:56 PM, Wang, Tony Congqian
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:e1e57038acfd43219e57ad75cd3f648a@rwth-aachen.de">
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<p>Hello,</p>
<p><br>
</p>
<p>Sorry, I missed something in the code about the second point.
The question has been resolved.</p>
<p><br>
</p>
<p>Best Regards,</p>
<p>Tony<br>
</p>
<p><br>
</p>
</div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
face="Calibri, sans-serif" color="#000000"><b>Von:</b> Scip
<a class="moz-txt-link-rfc2396E" href="mailto:scip-bounces@zib.de"><scip-bounces@zib.de></a> im Auftrag von Wang, Tony Congqian
<a class="moz-txt-link-rfc2396E" href="mailto:tony.wang@rwth-aachen.de"><tony.wang@rwth-aachen.de></a><br>
<b>Gesendet:</b> Mittwoch, 14. August 2019 16:49:48<br>
<b>An:</b> <a class="moz-txt-link-abbreviated" href="mailto:scip@zib.de">scip@zib.de</a><br>
<b>Betreff:</b> Re: [SCIP] cuts.c</font>
<div> </div>
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dir="ltr">
<p>Hello Leona,</p>
<p><br>
</p>
<p>thanks for the quick reply. Thats also what I was thinking.
I have two other questions:</p>
<p><br>
</p>
<ol style="margin-bottom: 0px; margin-top: 0px;">
<li>Why is minefficacy not used in SCIPsepastoreApplyCuts? <span>SCIPsetIsFeasPositive(set,
SCIProwGetLPEfficacy(cut, set, stat, lp))</span> is
called anyway, so I guess it isn't the separators task to
check for minefficacy, so shouldn't there be
<span>SCIPsetIsFeasPositive(set, SCIProwGetLPEfficacy(cut,
set, stat, lp) - "<b>minefficacy</b>" )</span></li>
<li><span>Objectparallelism is not calculated when not using
debug-mode since <span>
checkRowObjprod</span>() is deactivated in
non-debug-mode. Is this intended (since
objectparallelism seems to not give a lot of improvement
and is appearently slow to calculate)? What makes me
wonder though is that
<span>SCIProwGetObjParallelism()</span> is the only
function that calls <span>checkRowObjprod</span>() and
<span>SCIProwGetObjParallelism() is only referenced by
selectCuts().</span> So why even bother disabling the
function when the user can disable the use by setting
<span style="background-color:white;">objparalweight</span>
= 0</span></li>
</ol>
<div><br>
</div>
<div>Best Regards,</div>
<div>Tony<br>
</div>
</div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
face="Calibri, sans-serif" color="#000000"><b>Von:</b> Scip
<a class="moz-txt-link-rfc2396E" href="mailto:scip-bounces@zib.de"><scip-bounces@zib.de></a> im Auftrag von Leona Gottwald
<a class="moz-txt-link-rfc2396E" href="mailto:gottwald@zib.de"><gottwald@zib.de></a><br>
<b>Gesendet:</b> Mittwoch, 14. August 2019 12:43:51<br>
<b>An:</b> <a class="moz-txt-link-abbreviated" href="mailto:scip@zib.de">scip@zib.de</a><br>
<b>Betreff:</b> Re: [SCIP] cuts.c</font>
<div> </div>
</div>
<div>
<p>Hello Tony,</p>
<p><br>
</p>
<p>thanks for your question, indeed that does not make sense
and was not intended.</p>
<p><br>
</p>
<p>The code will be changed to <span>add the
dircutoffdistweight instead of the objparalweight in the
next release which is consistent with the behavior for
locally valid cuts.</span></p>
<p><span><br>
</span></p>
<span>Best,<br>
</span>
<p><span>Leona</span></p>
<p><span><br>
</span></p>
<div class="moz-cite-prefix">On 8/12/19 12:48 AM, Wang, Tony
Congqian wrote:<br>
</div>
<blockquote type="cite"
cite="mid:ba14e3e1c56f47f8a3a6f4a800a55d4a@rwth-aachen.de">
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<p>Hello community,</p>
<p><br>
</p>
<p>I have a question regarding cuts.c:2563 -- efficacyfac
+= objparalweight; --. I couldn't find the reasoning of
this addition anywhere. It is done, when
dircutoffdistance is not calculated (either due to
missing incumbent or
<span>dircutoffdistweight</span> == 0). So I would
think, that in the case that the incucmbent is missing,
efficacy would get more weight, but I can't yet see the
reasoning behind adding objparalweight on it.</p>
<p><br>
</p>
<p>Best Regards,</p>
<p>Tony<br>
</p>
</div>
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