In the emergency management for public incidents, it is a impossible problem how to improve the capacity of context aware and determine the grade of risk.

Third, put forwards tactics to evade agent risk, such as Countermeasures responding to different grade of risk, ways to manage risk steadily and supporting system of risk management.

Risk assessment is an essential step of loan or insurance underwriting processes, and the risk grade calculation operation usually lends itself very naturally to a business rule based implementation.