[目的/意义]随着资源建设和流通服务的变革，国内部分图书馆对逾期罚款制度进行的革新引发争议。逾期罚款制度下读者的借阅和逾期行为究竟呈现何种特点、制度如何改革应该从实际借阅数据着手进行分析。[方法/过程]通过抓取图书馆逾期读者的借阅数据进行人工标引，分析目前仍旧采用逾期罚款制度的情况下读者逾期行为特点，根据提取的特征指标刻画逾期读者的类型，并制定相应的应对措施。[结果/结论]高频率逾期读者的逾期行为主要由于多册次、长时间、反复逾期导致，并且有连续多次逾期记录的会加重逾期行为。逾期罚款制度在具体情境下所起到的作用和约束力是存在差异的，基于用户借阅数据制定适合国内图书馆用户的政策，利用新技术提供更加完善的借阅服务将会有利于缓解读者的逾期行为。
[Purpose/significance]With the constantly evolving resource construction and circulation service, the reform of overdue fine policy of many libraries has drawn greater attention.The characteristics of readers' lending and overdue behavior, along with the policy reform direction should be considered based on the data analysis.[Method/process]By collecting lending data from the OPAC system and labeling manually, this study explored the characteristics of readers lending and overdue behavior. With the features extracted from the lending process, the paper depicted different reader group characteristics and proposed corresponding strategies to address these issues.[Result/conclusion]The high-frequency overdue readers always have specific behaviors such as books exceeding the time limit for an unusually long period, many books overdue at one time and occurred constantly, which would make matters worse.The constraining force and effect of overdue policy are different according to the service scenes. Making policies with data-based analysis and adopting new technology may be benefit for the reducing of overdue behavior.
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