def __init__(self):
self.x = []<EOL>self.y = []<EOL>self._mean_x_in_window = <NUM_LIT:0.0><EOL>self._mean_y_in_window = <NUM_LIT:0.0><EOL>self._covariance_in_window = <NUM_LIT:0.0><EOL>self._variance_in_window = <NUM_LIT:0.0><EOL>self._span = None<EOL>self.smooth_result = []<EOL>self.cross_validated_residual = None<EOL>self.window_size = None<EOL>self._original_index_of_xvalue = []  <EOL>self._window_bound_lower = <NUM_LIT:0><EOL>self._x_in_window = []<EOL>self._y_in_window = []<EOL>self._neighbors_on_each_side = None<EOL>
Smoother constructor.