Originally posted by: SongYang

Dear all,

I have two variables, one is boolean,say a; the other one is int, say b.
Now I have a question which is
I want to define the relationship between a and b in the constraint, when b is bigger than 0 ,a is true; otherwise, a is false.
How can I do that?

Thanks in advance
#CPLEXOptimizers
#DecisionOptimization

Originally posted by: T_O

Does b have upper and lower bounds?

Best regards,
Thomas
#CPLEXOptimizers
#DecisionOptimization

Originally posted by: SongYang

Yes, let's say, b is between 0 and 10.
#CPLEXOptimizers
#DecisionOptimization

Originally posted by: SystemAdmin

Assume general case L<=b<=U

% Force a to be 1 if b>0
b <= U*a

% Force a to be zero if b<=0
b >= 0.5+(1-a)*(L-0.5)
#CPLEXOptimizers
#DecisionOptimization

Originally posted by: SongYang

thanks man.
#CPLEXOptimizers
#DecisionOptimization