hazard rating meaning in English

危害程度
危害等级；危害分级
危险等级

According to the problem that the recovery rate is traditional treated as a constant or an independent stochastic variable by the classical credit risk pricing and management model , and problem that the negative correlation between the default probability and recovery rate is always neglected , this dissertation gets the exponential and logarithm regression models of default probablilty and recovery rate based on some empirical researches , and improves on several broadly applied credit risk models , such as structural hazard rate model , affine structure model , convertible bond pricing model and credit metrics model , and introduce the negative correlation between
针对传统的信用风险定价模型及信用风险管理模型将违约回收率看成是一个外生的常数或是一个独立的随机变量,而忽略回收率和违约概率之间的负相关性这一问题,本文应用相关实证研究得到了违约概率和回收率的指数和对数回归模型,并对应用非常广泛的结构化风险率模型、仿射结构模型、可转换债券定价模型和creditmetrics模型进行了改进和拓展,在新模型中应用指数和对数函数引入了这两个变量之间的负相关性。