def init_dcp_attr(self):
shape = u.Shape(*intf.size(self.value))
# If scalar, check sign. Else unknown sign.
if shape.size == (1, 1):
sign = u.Sign.val_to_sign(self.value)
else:
sign = u.Sign.UNKNOWN
self._dcp_attr = u.DCPAttr(sign, u.Curvature.CONSTANT, shape)
def init_dcp_attr(self):
"""Determines the curvature, sign, and shape from the arguments.
"""
sign = self.args[0].objective.args[0]._dcp_attr.sign
if isinstance(self.args[0].objective, Minimize):
curvature = u.curvature.Curvature.CONVEX
elif isinstance(self.args[0].objective, Maximize):
curvature = u.curvature.Curvature.CONCAVE
else:
raise Exception(
("You called partial_optimize with a Problem object that "
"contains neither a Minimize nor a Maximize statement; "
"this is not supported."))
self._dcp_attr = u.DCPAttr(sign, curvature, u.Shape(1, 1))
def init_dcp_attr(self):
"""Override.
"""
self._dcp_attr = utils.DCPAttr(utils.Sign.POSITIVE,
utils.Curvature.AFFINE,
utils.Shape(self._rows, self._cols))
def init_dcp_attr(self):
shape = u.Shape(self._rows, self._cols)
sign = u.Sign(self.sign_str)
self._dcp_attr = u.DCPAttr(sign, u.Curvature.CONSTANT, shape)
def init_dcp_attr(self):
shape = u.Shape(*intf.size(self.value))
sign = intf.sign(self.value)
self._dcp_attr = u.DCPAttr(sign, u.Curvature.CONSTANT, shape)