基于CAT的在线标定:设计与方法

项目增补是题库建设和维护的重要手段, 而标定新题参数是项目增补的重要内容。在线标定设计和在线标定方法分别研究新题的施测方式和参数估计方法, 是计算机化自适应测验(computerized adaptive testing, CAT)情景下项目增补的核心技术。重点厘清在线标定设计与在线标定方法的发展思路和脉络, 并对它们的特点、联系和表现进行介绍和评价。未来应基于其他信息指标进一步研究在线标定设计, 可基于联合估计和误差校正的思路探究在线标定方法, 应加强研究认知诊断CAT和多维CAT的在线标定技术, 深入开展项目增补方法的实证研究。

Online calibration based on computerized adaptive testing: Design and method

Item replenishment is essential for item bank development and maintenance, where new items’ parameter calibration plays a significant role. Two core techniques of item replenishment under the circumstances of computerized adaptive testing (CAT) are: 1) online calibration design; 2) online calibration method. The former investigates the administration way of new items, while the later explores parameter estimation methods. This paper aims to clarify the development ideas and contexts of online calibration design and online calibration method. Additionally, their characteristics, relations and performance were illustrated and evaluated in details. At the end, several future research directions were pointed out. It is important to further study online calibration design based on different information indicators and online calibration methods based on joint estimations and error corrections. Moreover, future study could explore the online calibration technique in cognitive diagnostic CAT (CD-CAT) and multidimensional CAT (MCAT), as well as the empirical applications of item replenishment.