建立单笔投资的利率贴现模型按照一阶随机占优序、二阶随机占优序以及风险偏好型随机占优序递减的充分条件。若组合系数按超优序递减，投资组合情况下的利率贴现模型按照二阶随机占优序、风险偏好型随机占优序递减的充分条件也做了分析。
The sufficient conditions for interest discount models increasing in the sense of the first-order stochastic dominance, the second-order stochastic dominance, and the risk-loving stochastic dominance were first given in this paper. We also obtained the sufficient conditions for weighted interest discount models increasing in the sense of the second-order stochastic dominance, and the risk-loving stochastic dominance when the weights decrease in the sense of the majorization order.
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