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<p class="MsoNormal">Both treeselection_ (select which subtree to explore next) and nodeselection_ (select which node in a subtree to process next) are controlled by parameter Alps_searchStrategy.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">You can modify the function setupKnowledgePools() in AlpsKnowledgeBroker.cpp to set them to different strategies.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none">Alps currently doesn’t support user search strategy, for now, you can add yours manually in the setupKnowledgePools() .
<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none">Hope this helps,<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none">-Yan <span style="font-size:10.0pt;font-family:"Courier New"">
<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"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> chipps-bounces@list.coin-or.org [mailto:chipps-bounces@list.coin-or.org]
<b>On Behalf Of </b>???<br>
<b>Sent:</b> Tuesday, December 04, 2012 9:19 AM<br>
<b>To:</b> chipps; geogrid<br>
<b>Subject:</b> [CHiPPS] Problems About Treeselection and Nodeselection in Alps<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Dear professors,<o:p></o:p></p>
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<p class="MsoNormal"> I am puzzled about the Treeselection and Nodeselection in Alps.<o:p></o:p></p>
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<p class="MsoNormal"> In I opinion selecting a node to process is the same with selecting a subtree.<o:p></o:p></p>
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<p class="MsoNormal"> Because during the processing of the selected node the node becomes a subtree.<o:p></o:p></p>
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<p class="MsoNormal"> But in the AlpsSearchStrategy.cpp there is Treeselection_ and nodeselection_.<o:p></o:p></p>
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<p class="MsoNormal"> And even in the hybrid strategy, the Treeselection_ and the nodeselection_ are different.<o:p></o:p></p>
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<p class="MsoNormal"> How do the two selection(Treeselection_ and Nodeselection_) work?<o:p></o:p></p>
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<p class="MsoNormal"> I want to know this because:<o:p></o:p></p>
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<p class="MsoNormal"> First I am trying to change search strategy when the tree-search is processing by reassign the value of nodeselection_ or treeselection_.<o:p></o:p></p>
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<p class="MsoNormal"> Could I change the value of one of them, change all of them, or can I give them different values(nodeselection_= new AlpsTreeSelectionBest; nodeSelection_ = new AlpsNodeSelectionDepth, for example)?<o:p></o:p></p>
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<p class="MsoNormal"> Second, I will write my own hybrid at last, then how can I decide the value of treeselection_ and nodeselection? <o:p></o:p></p>
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<p class="MsoNormal"> And I checked doctor Xu's doctoral dissertation. There is only explanation about nodeselection_.<o:p></o:p></p>
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<p class="MsoNormal">May happiness be with you!<o:p></o:p></p>
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