Initializing help system before first use

# problem.addcbnodecutoff

Purpose
This subroutine is deprecated and will be removed in a future release. Use problem.addNodecutoffCallback instead.
Declares a user node cutoff callback function, called every time a node is cut off as a result of an improved integer solution being found during the branch and bound search. This callback function will be called in addition to any callbacks already added by addcbnodecutoff.
Synopsis
`

problem.addcbnodecutoff(callback, data, priority)

callback(my_prob, my_object, node)

`
Arguments

callback | The callback function, which takes three arguments, my_prob, my_object and node, and has no return value. This function is called every time a node is cut off as the result of an improved integer solution being found.
my_prob | The problem passed to the callback function, callback.
my_object | The user-defined object passed as data when setting up the callback with addcbnodecutoff.
node | The number of the node that is cut off.
data | A user-defined object to be passed to the callback function, callback.
priority | An integer that determines the order in which multiple node-optimal callbacks 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.

Example
The following notifies the user whenever a node is cutoff during the tree search:

    prob.addcbnodecutoff(Cutoff, None, 0)
    mipoptimize(prob, "")

The callback function might resemble:

    def Cutoff(prob, object, node):

        print("Node {0} cutoff".format(node))

Further information
This function allows the user to keep track of the eligible nodes. Note that the LP solution will not be available from this callback.
Related topics
problem.removeNodecutoffCallback, problem.addOptnodeCallback, problem.addInfnodeCallback, problem.addIntsolCallback, problem.addNodecutoffCallback.
Parent Topic Deprecated functionality

© 2001-2026 Fair Isaac Corporation. All rights reserved. This documentation is the property of Fair Isaac Corporation (“FICO”). Receipt or possession of this documentation does not convey rights to disclose, reproduce, make derivative works, use, or allow others to use it except solely for internal evaluation purposes to determine whether to purchase a license to the software described in this documentation, or as otherwise set forth in a written software license agreement between you and FICO (or a FICO affiliate). Use of this documentation and the software described in it must conform strictly to the foregoing permitted uses, and no other use is permitted.