Research Of Factor Judgment Expert System On Explosive Case

In recent years, the criminal case with explosion happened ceaselessly. In order to prevent violent crime, it is necessary to create database for explosives which were used in explosive case. The calculation of charge and identification of category for explosion must be studied, while integrating professional knowledge and experience of expert, finally to establish the factor judgment expert system on explosive case by the form of intelligent technology.In this paper, the specific work is studied on the law of explosive theory and the inspection of imprint and residue on explosion. It is useful to collect the data of explosives and marker and then build the model of charge-calculating and category-judging for explosives. In detail, it is necessary to build the database, knowledge base and inference engine of expert system and implement it with software by VB language. This software can be used to calculate explosive charge and judge explosive category for explosive case.In this expert system, knowledge base is established by the method of produced rule and object oriented representation. It is shown as professional knowledge of the explosion field which is generated by a series of rules. The database is established by the method of state space, it includes the data and conditions of expert system. Inference engine uses the strategy of reasoning combining between likelihood inference and logical inference. In the actual operation of the process, it is shown as the combining of program guiding, formula method and retrieval mechanism.