1Blurb:: 2Allow treatment of discrete variables as continuous 3 4Description:: 5The variables domain specifies how the discrete variables are treated. 6If the user specifies \c mixed in the variable specification block, 7the continuous and discrete variables are treated separately. If the 8user specifies \c relaxed in the variable specification block, the 9discrete variables are relaxed and treated as continuous 10variables. This may be useful in optimization problems involving both 11continuous and discrete variables when a user would like to use an 12optimization method that is designed for continuous variable 13optimization. All %Dakota methods have a default value of mixed for 14the domain type except for the branch-and-bound method which has a 15default domain type of relaxed. Note that the branch-and-bound method 16is under development at this time. Finally, note that the domain 17selection applies to all variable types: design, aleatory uncertain, 18epistemic uncertain, and state. 19 20With respect to domain type, if the user does not specify an 21explicit override of \c mixed or \c relaxed, Dakota infers 22the domain type from the method. As mentioned above, 23all methods currently use a mixed domain as a default, except 24the branch-and-bound method which is under development. 25 26Examples:: 27Theory:: 28Faq:: 29See_Also:: variables-mixed 30