Study On The Web Type System Of Public Crisis Forewarn Based CBR

Presently, crisis management institutions around the world increase emphasis on the work of the public crisis forewarn. it is regarded as a necessary condition for improving the efficiency and the level of crisis management to carry out the public crisis forewarns timely and effectively apply the Web type system based on Case-based Reasoning(CBR) and the correlation technique of public crisis forewarn in the practice, may improve the condition of the information asymmetrical when current crisis management department carries on the decision-making, and reverse the Unfavorable situation of social participation degree low in the work of crisis forewarns. It has a vital significance to realize the scientific public crisis management by this doing.Firstly, this paper elaborated the work patterns of the public crisis forewarn about our country and the overseas, inquire into the present situation of our country's public crisis forewarns work, analyzes and summarizes our country the deficiency which exists in this aspect, then revealed the question where our country's crisis early-warning mechanism should improve. Through a series of public crisis event's study and research as well as recently occurs in our country for several years, it has been clear about this system's function demand and According to the ability on the semi-structured and the non-structured decision-making problem, the paper decide to solve the problem that faces in the present work of public crisis forewarn by the Case-based Reasoning method and unifies the B/S structure system.Then, in the foundation of study and analyze a series of public crisis events recently occurs in our country by the predecessor, the paper deeply researched crisis early-warning system which based on the Case-based Reasoning method, including the crisis case's storehouse's construction (case expression, case storehouse's index strategy and case memory),the crisis case's retrieval,modify and learning. And developed the public crisis early-warning system's prototype system based on this, introduced the participle processing method of Chinese retrieval system in detail, proposed the more reasonable searching algorithm. In the last, to carry on the reliable analysis and computation on the crisis early-warning system deferred to the reliable principle.Finally, the paper made a conclusion with the content which has studied already, and made a preliminary analysis to the Web type early-warning system, as well as carried on the forecast to the public crisis early-warning system's following research.