experience rating
1.(Conclusion A bonus-malus) system of classified risk model is developed and credibility-based experience-rating method worked out,which provides a basis for generation of"high risk,high premium"insurance services.
2.Abstract Concerning with the specific flight experience, the understanding to Cooper - Harper Pilot Rating (PR)scale is described in detail, and how to give PR in the course of practical flight evaluation, is also expounded. Thus the principle, method, influential factors and points for attention is summarized for determination of PR.

