Enum HeuristicSearchRootSelections

Enum for selecting which local search heuristics to apply on the root node of a global solve. Use HeuristicSearchTreeSelections to control local search heuristics during the tree search. Default: LargeNeighborhood | SearchUserAddedSolutions (= 17).

The local search heuristics will benefit from having an existing incumbent solution, but it is not required. An initial solution can also be provided by the user through either XPRSloadmipsol or XPRSreadbinsol. Refers to: http://www.maths.ed.ac.uk/hall/Xpress/FICO_Docs/optimizer/HTML/HEURSEARCHROOTSELECT.html

Namespace: OPTANO.Modeling.Optimization.Solver.FicoXpress79.ConfigurationEnums
Assembly: Optimization.Solver.FicoXpress79.dll
Syntax
[Flags]
public enum HeuristicSearchRootSelections

Fields

Name Description
All

Enable all strategies. Not recommended.
CombinedNeighborhoodInteger

Local search with a neighborhood set up through the combination of multiple integer solutions.
LargeNeighborhood

Local search with a large neighborhood. Potentially slow but is good for finding solutions that differs significantly from the incumbent.
None

Disable heuristic.
SearchUserAddedSolutions

Local search on solutions added by XPRSaddmipsol. If this bit is disabled, a partial or an infeasible solution loaded with XPRSaddmipsol will be rejected without a search being performed.
SmallNeighborhoodContinuous

Local search with a small neighborhood centered around a node LP solution.
SmallNeighborhoodInteger

Local search with a small neighborhood centered around an integer solution. This heuristic will often provide smaller, incremental improvements to an incumbent solution.

Extension Methods