With the continuous development of Internet technology, machine learning has become an important part of people's life. Clustering algorithm is an unsupervised machine learning algorithm. At present, clustering algorithm is widely used. In business, clustering can help market analysts distinguish different groups of consumers from the consumer database, and summarize the consumption patterns or habits of each type of consumers. As a module of data mining, it can be used as a separate tool to discover some deep information distributed in the database, and summarize the characteristics of each class, or focus on a specific class for further analysis; moreover, clustering analysis can also be used as a preprocessing step of other analysis algorithms in data mining algorithm. This paper mainly introduces the application of clustering algorithm in bus IC card data analysis. By collecting the names of public transportation lines and stops in Xi'an City, and on the basis of not relying on GPS positioning data, this paper uses K-means clustering analysis to establish the theoretical model of passenger boarding stops, and records the actual number of passengers at each stop of the line, so as to verify the feasibility of the theory.<br>
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