ams.opt.Objective

class ams.opt.Objective(name: str | None = None, e_str: str | None = None, e_fn: Callable | None = None, info: str | None = None, unit: str | None = None, sense: str | None = 'min')

Base class for objective functions.

Exactly one of e_str or e_fn should be provided. e_fn(r) is the Phase 4.1+ form: a callable that takes a RoutineNS and returns the inner CVXPY expression to be minimized/maximized (the cp.Minimize/cp.Maximize wrapping is handled by Objective.evaluate).

Parameters:

namestr, optional

A user-defined name for the objective function.

e_strstr, optional

A mathematical expression (legacy form).

e_fncallable, optional

Callable e_fn(r) -> cp.Expression taking a RoutineNS.

infostr, optional

Additional informational text about the objective function.

sensestr, optional

The sense of the objective function, default to 'min'. min for minimization and max for maximization.

Attributes:

vNoneType

Return the CVXPY objective value.

rtnams.routines.Routine

The owner routine instance.

codestr

The code string for the objective function.

__init__(name: str | None = None, e_str: str | None = None, e_fn: Callable | None = None, info: str | None = None, unit: str | None = None, sense: str | None = 'min')

Methods

add_term(fn)	Register an extra cost term added to this objective at evaluate time.
evaluate(*args, **kwargs)
get_all_idxes()	Return all the indexes of this item.
get_idx()
parse(*args, **kwargs)

Attributes

class_name	Return the class name
e	Return the calculated numerical value of the underlying expression.
e_fn	Mutex descriptor for e_str / e_fn on opt elements.
e_str	Mutex descriptor for e_str / e_fn on opt elements.
formulation_source	Where the live CVXPY object for this item came from.
n	Return the number of elements.
shape	Return the shape.
size	Return the size.
v	Return the CVXPY objective value.