VARSELECTION

Branch and Bound: This determines the formula used to calculate the estimate of each integer variable, and thus which integer variable is selected to be branched on at a given node. The variable selected to be branched on is the one with the maximum estimate.

Integer

-1	Determined automatically.
1	The minimum of the 'up' and 'down' pseudo costs.
2	The 'up' pseudo cost plus the 'down' pseudo cost.
3	The maximum of the 'up' and 'down' pseudo costs, plus twice the minimum of the 'up' and 'down' pseudo costs.
4	The maximum of the 'up' and 'down' pseudo costs.
5	The 'down' pseudo cost.
6	The 'up' pseudo cost.
7	A weighted combination of the 'up' and 'down' pseudo costs, where the weights depend on how fractional the variable is.
8	The product of the 'up' and 'down' pseudo costs.

-1

XPRSmipoptimize ( MIPOPTIMIZE).