Controls symmetry detection. A value of -1 corresponds to an automatic setting. Other options are off (0), conservative (1), or aggressive (2).
Symmetry can impact a number of different parts of the algorithm, including presolve, the MIP tree search, and the LP solution process. Default settings are quite effective, so changing the value of this parameter rarely produces a significant benefit.
For examples of how to query or modify parameter values from our different APIs, refer to our Parameter Examples.