群体自助年金化的给付模型及逆选择风险研究
The Study of The Payment Model and Adverse Selection Risk of Group Self-Annuitisation

基于已有的研究成果，通过改进年金精算现值的计算方式，推导出更为合理的群体自助年金化给付递推模型；随后，以成员的资金分配额度及其主观意愿的生存率的一阶偏导数来刻画逆选择风险，比较了群体自助年金化和普通养老年金的逆选择风险的大小。
On the basis of the research before, by improving the calculation mode of actuarial present value of the annuity, this article deduces a more reasonable payment model; then contrast the value of adverse selection risk of ordinary pensions and the group self-annuitisation, which is mearsured by the first order partial derivative of capital allocation of the menbers to the survival rate based on subjective intension of the menbers.