QuadraticProgram

class QuadraticProgram(name='')

Quadratically Constrained Quadratic Program representation.

This representation supports inequality and equality constraints, as well as continuous, binary, and integer variables.

Parameters

name (str) – The name of the quadratic program.

Attributes

QuadraticProgram.linear_constraints	Returns the list of linear constraints of the quadratic program.
QuadraticProgram.linear_constraints_index	Returns the dictionary that maps the name of a linear constraint to its index.
QuadraticProgram.name	Returns the name of the quadratic program.
QuadraticProgram.objective	Returns the quadratic objective.
QuadraticProgram.quadratic_constraints	Returns the list of quadratic constraints of the quadratic program.
QuadraticProgram.quadratic_constraints_index	Returns the dictionary that maps the name of a quadratic constraint to its index.
QuadraticProgram.status	Status of the quadratic program.
QuadraticProgram.variables	Returns the list of variables of the quadratic program.
QuadraticProgram.variables_index	Returns the dictionary that maps the name of a variable to its index.

Methods

QuadraticProgram.binary_var([name])	Adds a binary variable to the quadratic program.
QuadraticProgram.clear()	Clears the quadratic program, i.e., deletes all variables, constraints, the objective function as well as the name.
QuadraticProgram.continuous_var([…])	Adds a continuous variable to the quadratic program.
QuadraticProgram.export_as_lp_string()	Returns the quadratic program as a string of LP format.
QuadraticProgram.from_docplex(model)	Loads this quadratic program from a docplex model.
QuadraticProgram.get_linear_constraint(i)	Returns a linear constraint for a given name or index.
QuadraticProgram.get_num_binary_vars()	Returns the total number of binary variables.
QuadraticProgram.get_num_continuous_vars()	Returns the total number of continuous variables.
QuadraticProgram.get_num_integer_vars()	Returns the total number of integer variables.
QuadraticProgram.get_num_linear_constraints()	Returns the number of linear constraints.
QuadraticProgram.get_num_quadratic_constraints()	Returns the number of quadratic constraints.
QuadraticProgram.get_num_vars([vartype])	Returns the total number of variables or the number of variables of the specified type.
QuadraticProgram.get_quadratic_constraint(i)	Returns a quadratic constraint for a given name or index.
QuadraticProgram.get_variable(i)	Returns a variable for a given name or index.
QuadraticProgram.integer_var([lowerbound, …])	Adds an integer variable to the quadratic program.
QuadraticProgram.linear_constraint([linear, …])	Adds a linear equality constraint to the quadratic program of the form:
QuadraticProgram.maximize([constant, …])	Sets a quadratic objective to be maximized.
QuadraticProgram.minimize([constant, …])	Sets a quadratic objective to be minimized.
QuadraticProgram.pprint_as_string()	Returns the quadratic program as a string in Docplex’s pretty print format.
QuadraticProgram.prettyprint([out])	Pretty prints the quadratic program to a given output stream (None = default).
QuadraticProgram.quadratic_constraint([…])	Adds a quadratic equality constraint to the quadratic program of the form:
QuadraticProgram.read_from_lp_file(filename)	Loads the quadratic program from a LP file.
QuadraticProgram.remove_linear_constraint(i)	Remove a linear constraint
QuadraticProgram.remove_quadratic_constraint(i)	Remove a quadratic constraint
QuadraticProgram.substitute_variables([…])	Substitutes variables with constants or other variables.
QuadraticProgram.to_docplex()	Returns a docplex model corresponding to this quadratic program.
QuadraticProgram.write_to_lp_file(filename)	Writes the quadratic program to an LP file.