Aiming at the evaluation of urban public transportation network, a comprehensive evaluation index system of urban public transportation network system was established based on comprehensive consideration of many factors of urban public transportation system. Then, the main comprehensive indicators in the index system were extracted by using the knowledge of non-negative matrix decomposition. After a comprehensive evaluation of the existing public transportation network in Yinchuan, it was found that the method proposed in this paper can overcome the shortcomings of traditional evaluation methods such as lack of clear geometric meaning and subjective dependence, so as to give more effective quantitative evaluation results.
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