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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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基于属性掌握概率的认知诊断模型
Keywords: 认知诊断,潜类别模型,属性掌握概率,参数估计
Abstract:
认知诊断模型研究主要包括模型建构、模型性能评估及结果报告几个方面.用多维连续向量表示被试的属性掌握概率,并假设属性应用满足局部独立的条件下建构属性掌握概率认知诊断模型,然后运用马尔科夫链蒙特卡洛方法估计模型参数,模拟研究表明该算法的准确性和稳定性较好.最后,运用该模型分析分数减法数据的结果表明被试属性水平和项目参数的诊断结果与规则空间方法分析的结果一致,从而表明该模型是可信和有效的.
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