[Coin-discuss] need help on SOS2 in CPLEX

[Chendong Li]

Hello,

I want to understand weight of variables of SOS2 in the LP file in CPLEX.
Could anyone explain "Adjacency is defined by the weights" from the
following sentence? Any kind of advice or comment is greatly appreciated.

Special ordered sets of type 2 require that at most two variables in the set
may be non-zero, and if there are two non-zeros, they must be adjacent.
Adjacency is defined by the weights, which must be unique within a set given
to the variables.

Have a nice day!

Best,
Chendong
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