Cognitive diagnostic computerized adaptive testing (CD-CAT) purports to combine the strengths of both CAT and cognitive diagnosis. Currently, large number of CD-CAT researches focus on the dichotomous data. In our knowledge, there are no researches on CD-CAT for polytomously scored items or data. However, polytomously scored items have been broadly used in a variety of tests for their advantages of providing more information about examinee, and fewer polytomous items can achieve the same precision compared with dichotomous items. Therefore, it is an interesting topic on CD-CAT with polytomously scored items, which need promote the research in polytomous cognitive diagnostic computerized adaptive testing (called PCD-CAT). This study aims to construct a framework of PCD-CAT, including the construction of the item bank, the item selection method, the parameter estimation, and the termination rule.

中文翻译：

---

多分计分项目的认知诊断计算机化自适应测试

认知诊断计算机自适应测试 (CD-CAT) 旨在结合 CAT 和认知诊断的优势。目前，大量的 CD-CAT 研究集中在二分数据上。据我们所知，没有关于多分计分项目或数据的 CD-CAT 研究。然而，多分题因其提供更多考生信息的优势而被广泛应用于各种考试中，与二分题相比，可以达到相同精度的多分题更少。因此，CD-CAT的多分项评分是一个有趣的课题，需要推动多分认知诊断计算机化自适应测试（PCD-CAT）的研究。本研究旨在构建PCD-CAT的框架，包括题库的构建、题项选择方法、