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GRBModel.addQConstr()
Add a quadratic constraint to a model. Multiple signatures are available.
Important note: the algorithms that Gurobi uses to solve quadratically constrained problems can only handle certain types of quadratic constraints. Constraints of the following forms are always accepted:
- , where is Positive Semi-Definite (PSD)
- , where is a vector of variables, and is a non-negative variable (a Second-Order Cone)
- , where is a vector of variables, and and are non-negative variables (a rotated Second-Order Cone)
GRBQConstr | addQConstr ( | GRBQuadExpr | lhsExpr, |
char | sense, | ||
GRBQuadExpr | rhsExpr, | ||
String | name ) |
-
Add a quadratic constraint to a model.
Arguments:
lhsExpr: Left-hand side quadratic expression for new quadratic constraint.
sense: Sense for new quadratic constraint (GRB.LESS_EQUAL or GRB.GREATER_EQUAL).
rhsExpr: Right-hand side quadratic expression for new quadratic constraint.
name: Name for new constraint.
Return value:
New quadratic constraint object.
GRBQConstr | addQConstr ( | GRBQuadExpr | lhsExpr, |
char | sense, | ||
GRBVar | rhsVar, | ||
String | name ) |
-
Add a quadratic constraint to a model.
Arguments:
lhsExpr: Left-hand side quadratic expression for new quadratic constraint.
sense: Sense for new quadratic constraint (GRB.LESS_EQUAL or GRB.GREATER_EQUAL).
rhsVar: Right-hand side variable for new quadratic constraint.
name: Name for new constraint.
Return value:
New quadratic constraint object.
GRBQConstr | addQConstr ( | GRBQuadExpr | lhsExpr, |
char | sense, | ||
GRBLinExpr | rhsExpr, | ||
String | name ) |
-
Add a quadratic constraint to a model.
Arguments:
lhsExpr: Left-hand side quadratic expression for new quadratic constraint.
sense: Sense for new quadratic constraint (GRB.LESS_EQUAL or GRB.GREATER_EQUAL).
rhsExpr: Right-hand side linear expression for new quadratic constraint.
name: Name for new constraint.
Return value:
New quadratic constraint object.
GRBQConstr | addQConstr ( | GRBQuadExpr | lhsExpr, |
char | sense, | ||
double | rhs, | ||
String | name ) |
-
Add a quadratic constraint to a model.
Arguments:
lhsExpr: Left-hand side quadratic expression for new quadratic constraint.
sense: Sense for new quadratic constraint (GRB.LESS_EQUAL or GRB.GREATER_EQUAL).
rhs: Right-hand side value for new quadratic constraint.
name: Name for new constraint.
Return value:
New quadratic constraint object.
GRBQConstr | addQConstr ( | GRBLinExpr | lhsExpr, |
char | sense, | ||
GRBQuadExpr | rhsExpr, | ||
String | name ) |
-
Add a quadratic constraint to a model.
Arguments:
lhsExpr: Left-hand side linear expression for new quadratic constraint.
sense: Sense for new quadratic constraint (GRB.LESS_EQUAL or GRB.GREATER_EQUAL).
rhsExpr: Right-hand side quadratic expression for new quadratic constraint.
name: Name for new constraint.
Return value:
New quadratic constraint object.
GRBQConstr | addQConstr ( | GRBVar | lhsVar, |
char | sense, | ||
GRBQuadExpr | rhsExpr, | ||
String | name ) |
-
Add a quadratic constraint to a model.
Arguments:
lhsVar: Left-hand side variable for new quadratic constraint.
sense: Sense for new quadratic constraint (GRB.LESS_EQUAL or GRB.GREATER_EQUAL).
rhsExpr: Right-hand side quadratic expression for new quadratic constraint.
name: Name for new constraint.
Return value:
New quadratic constraint object.
GRBQConstr | addQConstr ( | double | lhs, |
char | sense, | ||
GRBQuadExpr | rhsExpr, | ||
String | name ) |
-
Add a quadratic constraint to a model.
Arguments:
lhs: Left-hand side value for new quadratic constraint.
sense: Sense for new quadratic constraint (GRB.LESS_EQUAL or GRB.GREATER_EQUAL).
rhsExpr: Right-hand side quadratic expression for new quadratic constraint.
name: Name for new constraint.
Return value:
New quadratic constraint object.