School of Foreign Languages and International Education, Dalian Ocean University, Dalian 116023, Liaoning, China.
Comput Intell Neurosci. 2022 Jul 7;2022:7886369. doi: 10.1155/2022/7886369. eCollection 2022.
This study aims to solve the multiscale problems faced by the current classroom student behavior target detection based on the convolutional neural network (CNN) in the wireless network environment. Firstly, the recent reform of Japanese language education is introduced. Secondly, the multiscale problem research of classroom student behavior target detection is discussed. A CNN-based new extraction network is designed based on dilated convolution and pyramid features. An anchor reconstruction algorithm based on improved K-means clustering is presented for the self-made student behavior dataset. Finally, the performance of the designed algorithm is tested. The anchor reconstruction algorithm's mean average precision is 83.2%, and the average intersection over union is 73.7%. The experimental results of this scheme outperform the original single-shot multibox detector and K-means algorithms. Compared with other algorithms, the designed multiscale detection algorithm of classroom student behavior has the best detection effect on Pascal visual object classes (VOC) dataset. The detection accuracy of the entire dataset is 79.8%. Overall, the multiscale detection algorithm for classroom student behavior has a better detection effect on the Pascal VOC dataset and has good generalization ability and robustness. This research can guide students to recognize their class status and make corresponding adjustments to improve their learning efficiency, which has essential research significance and application value.
本研究旨在解决当前基于卷积神经网络(CNN)的无线网络环境下课堂学生行为目标检测中存在的多尺度问题。首先,介绍了日语教育的最新改革。其次,讨论了课堂学生行为目标检测的多尺度问题研究。基于扩张卷积和金字塔特征设计了一种基于 CNN 的新提取网络。针对自制的学生行为数据集,提出了一种基于改进 K-means 聚类的锚点重建算法。最后,测试了所设计算法的性能。锚点重建算法的平均准确率为 83.2%,平均交并比为 73.7%。该方案的实验结果优于原始的单发多框检测器和 K-means 算法。与其他算法相比,设计的课堂学生行为多尺度检测算法对 Pascal 视觉对象类(VOC)数据集具有最佳的检测效果。整个数据集的检测准确率为 79.8%。总体而言,该算法对课堂学生行为的多尺度检测具有较好的检测效果,具有良好的泛化能力和鲁棒性。本研究可以指导学生识别自己的课堂状态并进行相应的调整,以提高学习效率,具有重要的研究意义和应用价值。