VARSELECTION


Description
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.
Type
Integer
Values
-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.
Default value
-1
Affects routines


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