An optimal method of comfort evaluation rules based on incomplete information system for high-speed railway

With the rapid development of high-speed railway in China, it is very important to study on comfort of high-speed trains. On the basis of the comprehensive evaluation model of comfort based on rough set theory and fuzzy theory for high-speed railway, the paper has established a method of extraction and optimization for evaluation rules by rough set theory and theory of incomplete information system. From the analysis of examples, satisfactory reduction rules are showed to guide the comfort evaluation rapidly for better reliability and adaptability.