Initializing help system before first use

MULTIOBJOPS

Description
Modifies the behaviour of the optimizer when solving multi-objective problems.
Type
Integer
Topic areas
Multiobjective, Bit-vector
Values
Bit
Meaning
0 
XPRS_MULTIOBJOPS_ENABLEDMulti-objective enabled. If this bit is not set, multi-objective problems will treated as single-objective problems, and only objective 0 will be optimized.
1 
XPRS_MULTIOBJOPS_PRESOLVEApply multi-objective modifications during presolve. If this bit is not set, the original problem will be modified when solving each subsequent objective, and these modifications will remain in the problem after the solve has completed.
2 
XPRS_MULTIOBJOPS_RCFIXINGReduced cost fixing. If this bit is set, optimality of earlier objectives will be preserved by fixing all non-basic variables with non-zero reduced costs to their bounds. If not set, optimality of earlier objectives will be preserved by adding constraints to the problem.
Default value
7 (all bits are set, see Section Bit-vector controls for bit-vector controls)
Affects routines
XPRSoptimize.
Category
Control

Parent Topic Control Parameters

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