The unnormalized log posterior components for mean-field normal family (the quantity we want to approximate)
        RAO-BLACKWELLIZED!

def normal_log_q(self,z):
        """
        The unnormalized log posterior components for mean-field normal family (the quantity we want to approximate)
        RAO-BLACKWELLIZED!
        """             
        means, scale = self.get_means_and_scales()
        return ss.norm.logpdf(z,loc=means,scale=scale)