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Censoring Survival Data01:09

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Survival analysis is a statistical method used to analyze time-to-event data, often employed in fields such as medicine, engineering, and social sciences. One of the key challenges in survival analysis is dealing with incomplete data, a phenomenon known as "censoring." Censoring occurs when the event of interest (such as death, relapse, or system failure) has not occurred for some individuals by the end of the study period or is otherwise unobservable, and it might have many different...
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在非参数的CD-CAT中引入阻塞程序.

Jiahui Zhang1, Yuqing Yuan2, Ziying Qiu2

  • 1Collaborative Innovation Center of Assessment for Basic Education Quality, Beijing Normal University, Beijing, China.

PloS one
|December 10, 2024
PubMed
概括
此摘要是机器生成的。

这项研究增强了非参数认知诊断计算机自适应测试 (CD-CAT) 的阻塞程序,允许项目审查和答案修改. 这提高了灵活性,并保持了分类准确性,以获得更以学习者为中心的测试体验.

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科学领域:

  • 教育的测量和评估.
  • 心理测量 心理测量 心理测量
  • 认知科学 认知科学

背景情况:

  • 认知诊断计算机化适应测试 (CD-CAT) 用于诊断学生在教育环境中的知识掌握.
  • 目前的非参数CD-CAT缺乏在测试块内对项目审查和答案修改的灵活性.

研究的目的:

  • 引入和评估非参数CD-CAT的阻塞程序,提高灵活性.
  • 允许在非参数CD-CAT.中进行区块内项目审查和答案修改.
  • 评估区块大小对分类准确性的影响.

主要方法:

  • 进行了一项模拟研究,以评估非参数CD-CAT.AT中被阻塞的程序.
  • 检查了各种条件,包括块大小,项目质量和测试长度.
  • 绩效是根据正确分类率的模式来评估的.

主要成果:

  • 增加块大小显示了分类准确度的边际下降,随着物品质量的提高或测试时间的延长,分类准确度下降.
  • 2或4项的块大小通常保持了令人满意的分类准确性.
  • 阻塞程序允许在区块内的项目审查和答案修改.

结论:

  • 阻塞程序增强了非参数CD-CAT的灵活性.
  • 在区块内整合审查和修改,导致更具适应性和以学习者为中心的测试环境.
  • 这种方法提供了一种可行的方法来提高教育评估中的诊断准确性.