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problem.getCPCutList

Purpose
Returns a list of cut indices from the cut pool.
Topic area
Cuts
Synopsis
cutind, viol = problem.getCPCutList(cuttype=0, interp=-1, delta=-xpress.infinity)
Arguments
cuttype 
The user defined type of the cuts to be returned.
interp 
Way in which the cut type is interpreted:
-1 
get all cuts;
1 
treat cut types as numbers;
2 
treat cut types as bit-vectors (compare the Optimizer Reference Manual) - get cut if any bit matches any bit set in cuttype;
3 
treat cut types as bit-vectors (compare the Optimizer Reference Manual) - get cut if all bits match those set in cuttype.
delta 
Only those cuts with a signed violation greater than delta will be returned.
Return value
cutind 
Array containing the cuts.
viol 
Double array containing the values of the signed violations of the cuts.
Further information
1. The violated cuts can be obtained by setting the delta parameter to the size of the (signed) violation required. If unviolated cuts are required as well, delta may be set to -xpress.infinity which is defined in the library header file.
2. In case of a cut of type ' L', the violation equals the negative of the slack associated with the row of the cut. In case of a cut of type ' G', the violation equals the slack associated with the row of the cut. For cuts of type ' E', the violation equals the absolute value of the slack.
3. Please note that the violations returned are absolute violations, while feasibility is checked by the Optimizer in the scaled problem.
Related topics
problem.delCPCuts, problem.getCPCuts, problem.getCutList, problem.loadCuts, problem.getCutMap, problem.getCutSlack, the Optimizer Reference Manual.

Parent Topic Methods of the class problem

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