The variable value in a sub-optimal MIP solution. Use parameter
to indicate which alternate solution to retrieve.
Solutions are sorted in order of worsening objective value. Thus,
SolutionNumber is 1,
Xn returns the second-best
solution found. When
SolutionNumber is equal to its default
value of 0, querying attribute
Xn is equivalent to querying
The number of sub-optimal solutions found during the MIP search will depend on the values of a few parameters. The most important of these are PoolSolutions, PoolSearchMode, and PoolGap. Please consult the section on Solution Pools for a more detailed discussion of this topic.
For examples of how to query or modify attributes, refer to our Attribute Examples.