Firm Evaluation Model Based on Methods of Rough Set and Evidence Reasoning

This paper combines rough set method and evidential reasoning method, using evidential reasoning approach as a comprehensive settlement on the one-sided defect of rough set data mining method and using rough set method as a comprehensive settlement on the subjective defect of evidential reasoning method. Thus we construct a scientific and rational firm evaluation model. Firstly, model uses the attribute dependency calculating method of rough set to decompose decision-making table formed by the evaluation indicators; Secondly, extract evidence body from the relationship between the rough set theory and evidence reasoning theory; Finally, we use the DS evidence combining method to combine the evidences coming from each decision-making table.