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Learning Behavior and Sentiment Analysis

2021-02-23 13:01 作者:董一點點er  | 我要投稿

Topic:

Learning Behavior and Sentiment Analysis in MOOCs

 

Background:

As a form of online education, massive open online courses (MOOCs) are widely used and have boomed in recent  years  because  of  advantages  such  as  non-geographical  and  no  time  limitation.

Most  courses  have  high  dropout  rates  and  learners  are  prone  to  have  poor performance due to the unconstrained learning environment.

Although  there  have  been  many  studies,  the  following  problems  still  exist  in  the applications  of  learning  behavior  and  sentiment  analysis. 

Firstly,  for  dropout  behavior prediction, learning behavior discrepancy leads to a wide range of fluctuation of prediction results, which may result in low prediction results.

Secondly, there lacks of causal analysis between  learning  behaviors  and  performance.  Most  studies  have  focused  on  correlation analysis between them, resulting in unreliable conclusions and undefective decision support.

Thirdly, for sentiment analysis, supervised methods rely on a large amount of labeled data. Constructing large-scale labeled datasets is very laborious and time consuming. Besides, there exist a large amount of unlabeled data that have not been fully utilized.

 

What:

To  address  the  problems  mentioned  above,  this  dissertation  studies  the  learning behavior  and  sentiment  analysis  in  online  learning  environment,  aiming  at  accurate identification of at-risk learners and their sentiment, and making causal analysis.

The main works and contributions of this dissertation are summarized as follows:

(1) A dropout behavior prediction approach based on web log is proposed.

(2) A causal analysis approach between learning behaviors and learning performance is proposed. 

(3) A co-training semi-supervised learning model for sentiment polarity identification of course review is proposed.

(4) An  unsupervised  rule-based  aspect  and  opinion  extraction  approach  for  course review is proposed. 

 

参考资料来源:陈静 面向MOOCs的学习行为与情感分析


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