基于教师近场语音的课堂教学过程自动分析  

Automatic Analysis of Classroom Teaching Process based on Teachers’Near-field Speech

作　　者：骆祖莹[1,2] 赵琦琦 段福庆 LUO Zu-ying;ZHAO Qi-qi;DUAN Fu-qing(School of Artificial Intelligence,Beijing Normal University,Beijing 100875;Engineering Research Center of Virtual Reality and Applications,MOE,P.R.C,Beijing 100875)

机构地区：[1]北京师范大学人工智能学院,北京100875 [2]虚拟现实应用教育部工程研究中心,北京100875

出　　处：《现代教育技术》2021年第8期76-84,共9页Modern Educational Technology

基　　金：教育部-中国移动科研基金项目“人工智能条件下的教育实验研究”(项目编号:MCM20200404);国家自然科学基金项目“层次行为事件模型启发的课堂教学行为模式挖掘及其关键技术研究”(项目编号:61977009)的阶段性研究成果。

摘　　要：课堂教学过程分析自动化是改进日常教学的关键。随着AI技术的快速发展,使用商用软件对教师近场语音进行自动语音识别,能够获得精确的教师说话时段,得以开展如下的课堂教学过程自动编码与分析研究:(1)使用S-T(学生-教师)行为编码、构建S-T互动编码,实现了基于教师说话时段的全自动变时长S-T双编码;(2)提出了基于时长的S-T分析方法,生成教师主导行为占比Rt和师生互动率Ch的时间变化曲线;(3)通过教学活动建模,将连续的课堂教学过程离散为讲授、自主学习、问答-短互动、讨论-长互动等四类教学活动的序列;(4)开发了一套全自动可视化的课堂教学过程分析工具软件。The automation of classroom teaching process analysis is the key to improve daily teaching.With the rapid development of artificial intelligence(AI)technology,using the commercial software for automatic speech recognition of teachers’near-field speech can obtain accurate teachers’speaking periods,and the following automatic coding and analysis research of classroom teaching process can be carried out:(1)using S-T(student-teacher)behavior coding and constructing S-T interactive coding can realize fully automatic variable length S-T double coding based on the teachers’speaking periods;(2)a duration-based S-T analysis method was proposed to generate the time variation curves of the proportion of teachers’dominant behavior Rt and the teacher-student interaction rate Ch;(3)the continuous classroom teaching process was divided into the sequences of four kinds of activities including lecture,autonomous learning,question answering and short interaction,discussion and long interaction through the modeling of teaching activities;(4)an automatic and visual tool software was developed for classroom teaching process analysis.

关 键 词：课堂分析 师生互动 S-T分析 编码方法 教学行为建模 

分 类 号：G40-057[文化科学—教育学原理]