def __var_int(self, x, Ex, mu, std):
px = _normpdf(x, mu, std)
Vx = (self.target_transform.itransform(x) - Ex)**2 * px
return Vx
def __expec_int(self, x, mu, std):
px = _normpdf(x, mu, std)
Ex = self.target_transform.itransform(x) * px
return Ex
