摘要：Copied from this link For normal $X\sim N(\mu,\sigma^2)$, information matrix is $$\mathcal{I}_1 = \left( \begin{matrix} \frac{1}{\sigma^2} & 0 \ 0 & \ 阅读全文

摘要：$$F=Tr\sqrt{\sqrt{\rho _{\theta}}\left( \rho _{\theta}+\partial \rho _{\theta}d\theta +\partial ^2\rho _{\theta}\frac{d\theta ^2}{2} \right) \sqrt{\rh 阅读全文

摘要：$$We,,ignore,,time,,in,,\rho , i.e., \rho ,,is,,shorthand,,for,,\rho \left( t \right) \ \dot{\rho}=-i\left[ H,\rho \right] \ we,,define,,a,,linear,,ma 阅读全文