def __init__(self):
AbstractApproximator.__init__(self)
self.target_matrix = None
self.density = None
self.norm_bound = None
self.sigma_set = None
self.x = None
self.grad = None
def __init__(self):
AbstractApproximator.__init__(self)
self.target_matrix = None
self.density = None
self.norm_bound = None
self.sigma_set = None
self.x_prev, self.x = None, None
self.grad_prev, self.grad = None, None
self.conj_prev, self.conj = None, None
self.delta = None
self.grad_partial = None
