ratio-based selection的意思|示意

In this paper, we propose an agent-based model to examine what conditions can make the adverse selection to take its effect by introducing two variables-cognitive capability and valuation ratio.

在这篇文章中，我们通过采用多个体模型和引入两个变量——识别能力和估价比率来说明在什么条件下会发生逆向选择现象。

Based on the above, the impact of amplitude coefficient ratio on amplitude-phase Double Differential Space-Time Codes is discussed, and an optimal selection scheme in amplitude coefficient is given.

在此基础上，讨论了幅度系数比对幅度相位双差分空时码的影响，并给出了一种最佳的幅度系数选择方案。

This paper constructed a new index: risk-return tradeoff ratio (RRTR), for portfolio selection, based on a premise that the reason of investors bearing the risks is to gain the super returns.

本文根据投资者冒风险是为了获得超过无风险收益的超额收益这一基本假定，构造了风险收益抵换率这一指标作为投资者进行资产选择的基础。