Journal of Jilin University Science Edition ›› 2022, Vol. 60 ›› Issue (3): 697-704.

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A Deep Intelligent Teaching Evaluation Method Based on Compensation for Feature Deviation

LI Fang1,2, QU Yubin1,3 , LI Long1, LI Meng’ao4   

  1. 1. Guangxi Key Laboratory of Trusted Software, Guilin University of Electronic Technology, Guilin 541004, Guangxi Zhuang Autonomous Region, China; 2. School of Marxism, Jiangsu College of Engineering and Technology, Nantong 226001, Jiangsu Province, China; 3. School of Information Engineering, Jiangsu College of Engineering and Technology, Nantong 226001, Jiangsu Province, China; 4. CSSC Systems Engineering Research Institute, Beijing 100094, China
  • Received:2021-09-08 Online:2022-05-26 Published:2022-05-26

Abstract: Aiming at the  problems that there were feature deviation for  the minority class in massive open online course (MOOC) reviews, we proposed a deep intelligent teaching evaluation method based on compensation for feature deviation. Firstly, this method used the Glove pre-training model to obtain the distributed word vectors of MOOC reviews. Secondly, the shallow convolutional neural networks were used to learn the semantics of teaching evaluation  through multiple convolution kernels. The number of different types of reviews was introduced to design influence  factors,  which was  normalized and applied to  the cross-entropy loss function. Finally,  the data set of undergraduate teaching reviews based on Coursera was compared with other loss functions on F1,gmean,balance,gmeasure and other evaluation indicators. The experimental results show that the  loss function based on normalized  feature deviation compensation has  a performance improvement of up to 15.40% on gmeasure than the base loss function, and  the classification model using this loss function also shows strong stability.

Key words: text classification, feature deviation, convolutional neural network

CLC Number: 

  • TP311