Package org.ssclab.pl.milp
Interface Variable
-
public interface Variable
This interface allows accessing the optimal value assumed by the j-th variable of the LP problem (j=1..N). In addition to the optimal value, it is possible to retrieve other characteristics.- Version:
- 1.0
- Author:
- Stefano Scarioli
- See Also:
- SSC Software www.sscLab.org
-
-
Nested Class Summary
Nested Classes Modifier and Type Interface Description static class
Variable.TYPE_VAR
Defines the type of variable: integer, binary, or real.
-
Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description double
getLower()
Retrieves its lower bound.String
getName()
Retrieves the name of the variable.Variable.TYPE_VAR
getType()
Retrieves the type of variable (integer, binary, real).double
getUpper()
Retrieves its upper bound if set (by default it is + ∞)double
getValue()
Retrieves the optimal value assumed by the variable within the determined optimal solution.boolean
isFree()
Retrieves true if the variable is free.
-
-
-
Method Detail
-
getName
String getName()
Retrieves the name of the variable.- Returns:
- The name of variable
-
getType
Variable.TYPE_VAR getType()
Retrieves the type of variable (integer, binary, real).- Returns:
- The type of variable
-
getUpper
double getUpper()
Retrieves its upper bound if set (by default it is + ∞)- Returns:
- The upper bound of variable
-
getLower
double getLower()
Retrieves its lower bound.- Returns:
- The lower bound of variable
-
isFree
boolean isFree()
Retrieves true if the variable is free. To make a variable free, it must have been defined for the variable either a negative upper bound, or a negative lower bound, or indefinite (- ∞).- Returns:
- True if the variable is free.
-
getValue
double getValue()
Retrieves the optimal value assumed by the variable within the determined optimal solution.- Returns:
- The optimal value assumed by the variable within the determined optimal solution.
-
-