HomeTroubleshootingEvolver and RISKOptimizerEfficient Frontier Doesn't Allow an '=' Constraint

10.3. Efficient Frontier Doesn't Allow an '=' Constraint

Applies to:
Evolver 7.x
@RISK 7.x Industrial Edition

When I've selected Efficient Frontier and try to edit my constraints, I can select an "=" constraint, but the software changes it to <=.

This is a limitation of the underlying algorithms in the OptQuest engine. You can have a <= or >= constraint, but no = constraint for a value or list of values. (Efficient Frontier runs in OptQuest only, not in the Genetic Algorithm.)

This limitation apples only to the Efficient Frontier analysis type.  With the Standard analysis type, all five constraint types <, <=, =, >=, and > are available, in both the OptQuest engine and the Genetic Algorithm.

Last edited: 2017-05-30

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