高手请进啊，自个搞不明白！

高手请进啊，自个搞不明白！

这是用什么软件做的呀？

standard deviation.  If you have some knowledge on the likelihood-based analysis, you should know that for any parameters to maximize the likelihood function, the optimization will not give the estimators of the parameters but also its standard deviation. The standard deviation is the opposite value of the Hessian matrix. In state-switching model, we need to maximize the likelihood function over the switching probability, so the estimator of the probability has its standard deviation.