CROSSOVER
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Description
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Newton barrier: This control determines whether the barrier method will
cross over to the simplex method when at optimal solution has been found, to provide an end basis (see
XPRSgetbasis,
XPRSwritebasis) and advanced sensitivity analysis information (see
XPRSrange).
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Type
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Integer
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Values
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Default value
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-1
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Note
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The full primal and dual solution is available whether or not crossover is used. The crossover must not be disabled if the barrier is used to reoptimize nodes of a MIP.
By default crossover will not be performed on QP and MIQP problems. |
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Affects routines
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