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  • MIP Heuristic Large Neighborhood Search
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MIP Heuristic Large Neighborhood Search

Type : Bit Selection

Range : {-1..3}

Default : -1

This option specifies whether or not to enable the MIP large neighborhood search heuristics. Possible values are:

  • -1 (auto): Let Knitro determine automatically from MIP Heuristic Strategy

  • 0 (disable): Disable all large neighborhood search heuristics

  • 1 (bit 0): Enable relaxation enforced neighborhood search (RENS) heuristic

  • 2 (bit 1): Enable relaxation induced neighborhood search (RINS) heuristic

Knitro considers the bit values of this parameter. For example, if this parameter is set to 3, bit 0 and bit 1 are equal to 1 and, as a result, both RENS and RINS heuristics are enabled. If this parameter is set to 2, only RINS heuristic is enabled.

Learn more about

  • MIP Heuristic

  • MIP Heuristic Strategy

Last updated: Aug 06, 2025

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