对于Hursr指数估计，本文主要介绍8种方法，包括绝对值法、平滑方差法、残余方差法、R/S法、周期图谱法、修正的周期图谱法、差分方差法和Higchi方法。-For Hursr index estimation, this paper describes eight kinds of methods, including the absolute method, smooth variance method, the residual variance method, R/S method, pe