problem.addcbnewnode
problem.addcbnewnode |
Purpose
Declares a callback function that will be called every time a new node is created during the branch and bound search. This callback function will be called in addition to any callbacks already added by addcbnewnode.
Synopsis
problem.addcbnewnode (f_newnode, object, priority)
f_newnode (my_prob, my_object, parentnode, newnode, branch)
Arguments
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f_newnode
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The callback function, which takes five arguments:
myprob,
my_object,
parentnode,
newnode and
branch. This function is called every time a new node is created through branching.
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my_prob
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The problem passed to the callback function,
f_newnode.
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my_object
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The user-defined object passed as
object when setting up the callback with
addcbnewnode.
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parentnode
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Unique identifier for the parent of the new node.
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newnode
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Unique identifier assigned to the new node.
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branch
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The sequence number of the new node amongst the child nodes of
parentnode. For regular branches on a global entity this will be either
0 or
1.
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object
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A user-defined object to be passed to the callback function.
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priority
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An integer that determines the order in which callbacks of this type will be invoked. The callback added with a higher priority will be called before a callback with a lower priority. Set to 0 if not required.
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Further information
1. For regular branches on a global entity,
branch will be either zero or one, depending on whether the new node corresponds to branching the global entity up or down.
2. When branching on a
branchobject,
branch refers to the given branch index of the object.
Related topics