Analytic Hierarchy Process and fuzzy evaluation of passengers' satisfactory degree for QoS of railway passenger transportation

QoS (Quality of service) of railway passenger transportation is very important. Based on the thinking of passenger service, its evaluation indexes (or factors) are classified and disassembled into the multi-level structures, and form the hierarchal evaluating models. This paper discusses the deficiencies in 1–9 scaling method, and the frequency analysis method is introduced to compute the weight matrix of every evaluation indexes (or factors), and fractal conception and recursion thinking are applied to the research of passengers' satisfactory degree. After investigating and analyzing the passengers' satisfaction, the urgent problems, which railway passengers usually pay more attention to, are discovered. This paper provides the theory basis and directions in methods for improving the QoS of railway passenger transportation.