ILOG CPLEX 11.0 User's Manual > Languages and APIs > ILOG Concert Technology for Java Users > Choosing an Optimizer > Solving Subsequent Continuous Relaxations in a MIP

Solving Subsequent Continuous Relaxations in a MIP

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Parameter IloCplex.IntParam.RootAlg also controls the algorithm used for solving the first continuous relaxation when solving a MIP. The algorithm for solving all subsequent continous relaxations is then controlled by the parameter IloCplex.IntParam.NodeAlg. The algorithm choices appear in Table 2.4

Table 2.4 Algorithm Types for NodeAlg
alg 
Algorithm Type 
MILP? 
MIQP? 
MIQCP? 
0 
IloCplex.Algorithm.Auto 
yes 
yes 
yes 
1 
IloCplex.Algorithm.Primal 
yes 
yes 
not available 
2 
IloCplex.Algorithm.Dual 
yes 
yes 
not available 
3 
IloCplex.Algorithm.Network 
yes 
not available  
not available 
4 
IloCplex.Algorithm.Barrier 
yes 
yes 
yes 
5 
IloCplex.Algorithm.Sifting 
yes 
not available 
not available 

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