A pricing model of corporation bond is built up, default assumed as a stochastic intensity process and related to risk-free interest rate.

在考虑企业债券违约风险的情形下，首先将违约看作具有不确定性的随机强度过程，对违约风险进行了建模。

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In fact, the basic math says that we should be willing to do anything literally anything that is required to get our real long-term GDP growth rate up above the real interest rate on federal debt (assumed by the Social Security Trustees to be 2.90%).

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