实践指数
实践指数-
近年来，在以人为本的科学发展观的指导下，一些基于社会实践的指数问题也从新的宏观环境中凸显出来，对指数理论方法的研究提出了新的要求。
In recent years , under the guidance of scientific development philosophy which gives prominence to human being , practical work has raised a number of new indices problems to academic research .
-
传统理论通常假设金融市场收益率服从正态分布，然而实践表明，股票指数收益率的分布具有尖峰厚尾的经验特征，因此采取传统的正态分布往往很难对其进行描述。
The traditional theories always assume that the return of financial market follows normal distribution , but in practice it is found that the return of stock index always follows a ' heavy-tailed and skewed ' probability distribution , in which traditional normal distribution may not be proper .