</math>,度量为<math>h_{\mu\nu}=-\mathbb{E}_{\tilde{q}(\mathbf{x}|\theta)}\partial_{\mu}\partial_{\nu}\ln \tilde{q}(\mathbf{x}|\theta) | </math>,度量为<math>h_{\mu\nu}=-\mathbb{E}_{\tilde{q}(\mathbf{x}|\theta)}\partial_{\mu}\partial_{\nu}\ln \tilde{q}(\mathbf{x}|\theta) |