The Quantification Study on Emergencies and their Influence on Corporation Credit Risks

This study tries to reveal emergencies and their influence on corporation credit risks. Based on the recognition of emergency and its definition, we establish Poisson process model of emergencies and compound Poisson process model of emergenciespsila influence on corporation credit risks. And then, we do some quantification study on them. It turns out that the expectation of the influence can be quantified as a certain formula during a certain interval. Affected by emergencies, the time interval, in which a corporation credit level lasted, can also be ascertained.