Parameters of the Solution Pool

INDEX

ILOG CPLEX provides parameters to control the solution pool. Table 15.3 summarizes these parameters. ILOG CPLEX Parameter Reference Manual documents each of these parameters in greater detail.

Purpose	Concert parameter	Callable Library parameter	Interactive Optimizer
Intensity	`SolnPoolIntensity`	`CPX_PARAM_SOLNPOOLINTENSITY`	`mip pool intensity`
Limit on pool (number of solutions generated)	`PopulateLim`	`CPX_PARAM_POPULATELIM`	`mip limits populate`
Limit on capacity (number of solutions stored)	`SolnPoolCapacity`	`CPX_PARAM_SOLNPOOLCAPACITY`	`mip pool capacity`
Replacement strategy	`SolnPoolReplace`	`CPX_PARAM_SOLNPOOLREPLACE`	`mip pool replace`
Relative objective gap	`SolnPoolGap`	`CPX_PARAM_SOLNPOOLGAP`	`mip pool relgap`
Absolute objective gap	`SolnPoolAGap`	`CPX_PARAM_SOLNPOOLAGAP`	`mip pool absgap`

The node limit parameter (NodeLim, CPX_PARAM_NODELIM) and time limit parameter (TiLim, CPX_PARAM_TILIM) also have an effect on the solution pool, just as they influence MIP optimization generally. For more detail about these parameters, see their entries in the ILOG CPLEX Parameter Reference Manual.