The Safety Assessment Method Research Based On Rough Set Thorey

According to the different characters of the traditional safety assessment methods, the application is different. Because of human factors, the objective assessment is difficulty in the qualitative evaluation. The selection of the index parameter still existed limitation in the code assessment and quantitative evaluation for one project. Evaluation process is tedious too. The evaluation methods based on mathematics theories also include lots of subjective factors, and then, the credibility of evaluation results is influenced. This text mainly introduced the general context of Rough Set Theory (RST), and the safety assessment study based on this theory. Applying Rough Set Theory (RST), useful knowledge or rules can be extracted from original data. According to this idea, the knowledge of rough set can be used in the safety assessment. The purpose is to solve some problems of the traditional safety assessment methods.According to the procedure of safety assessment, collecting the data, analyzing and identifying hazard factors, we can get the preliminary assessment, which would be based on, the result can be got.The data handling is to consult the method of AHP and we can get the weight, and then the assessment result can be got.This method is based on knowledge and knowledge base, the main work is to handle the data further. The difficult points are to get the weight and decision attribute. Because of the characters of RST, the character and application of the safety assessment method are decided. Although, the method is not perfect, it's a pragmatic method beyond doubt.