中国科学技术大学学报 ›› 2021, Vol. 51 ›› Issue (1): 12-21.DOI: 10.52396/JUST-2020-0007

• 信息科学 • 上一篇    下一篇

基于概率图模型的计算机课程教学认知诊断框架

胡心颖, 何钰, 孙广中*   

  1. 中国科学技术大学计算机科学与技术学院,安徽合肥 230026
  • 出版日期:2021-01-31 发布日期:2021-05-27

A cognitive diagnostic framework for computer science education based on probability graph model

Hu Xinying, He Yu, Sun Guangzhong*   

  1. School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China
  • Online:2021-01-31 Published:2021-05-27
  • Contact: *E-mail: gzsun@ustc.edu.cn
  • About author:Hu Xinying is currently a PhD student in the Department of Computer Software and Theory under the supervision of Prof. Sun Guangzhong at University of Science and Technology of China. Her research focuses on educational data mining.
    He Yu is currently a PhD student under the supervision of Prof. Sun Guangzhong at University of Science and Technology of China. Her research mainly focuses on educational data mining.
    Sun Guangzhong (corresponding author) received his PhD degree in Computer Software and Theory from University of Science and Technology of China. He is currently a professor at University of Science and Technology of China. His research interests include high performance computing, algorithm optimization, and big data processing.
  • Supported by:
    The Key research project for Teaching of Anhui Province (2019jyxm0001);Research project for Teaching of Anhui Province (2020jyxm2304).

摘要: 提出一种新的认知诊断框架,用于在计算机课程教学中评估学生的理论学习能力与代码实践能力.基于概率图模型,引入学生代码能力,同时对学生的理论能力以及应用能力进行建模.进而提出一个并行优化算法以快速对模型进行训练.在多个数据集上进行的实验结果表明,与基准模型相比,该模型在MAE、RMSE指标上都有较大幅度的提升.所提出的模型可为计算机课程教学提供更准确全面的分析结果.

关键词: 认知诊断, 概率图模型, 教育数据挖掘

Abstract: A new cognitive diagnostic framework was proposed to evaluate students' theoretical and practical abilities in computer science education. Based on the probability graph model, students' coding ability was introduced, then the students' theoretical and practical abilities was modeled. And a parallel optimization algorithm was proposed to train the model efficiently. Experimental results on multiple data sets show that the proposed model has a significant improvement in MAE and RMSE compared with the competing methods. The proposed model provides more accurate and comprehensive analysis results for computer science education.

Key words: cognitive diagnosis, probability graphic model, educational data mining

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