mean-variance

chapter 2 discusses reinsurance optimization model under mean-variance principle. aiming at change stop loss reinsurance, it derives optimal conclusions of both individual model and collective model.

第二章讨论了均值方差原理下的再保险最优化模型及其适用条件，针对停止损失再保险，得出个体模型与集合模型下的最优结论。

harry markowitz in 1952 first proposed the mean-variance and the efficient frontier model which laid a solid foundation for the modern portfolio theory.

马柯维茨（H.M.Markowitz）在1952年首次提出了均值&方差分析方法和投资组合有效边界模型，为现代投资组合理论奠定了坚实的基础。

with the perspective of risk transferring, this thesis focuses on discussing the reinsurance optimization model under mean-variance principle, utility theory and sharpe's ratio, their meanings, basic ideas and conditions applicable.

从原保险人利用再保险转移风险的目的出发，本文集中讨论了均值方差原理、效用原理及夏普比率（风险收益比率）下的再保险最优化模型，三种原理的含义、基本思想及所适用的条件。