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Automatic Assessment of CoI-Cognitive Presence within Asynchronous Online Learning

机译:在异步在线学习中自动评估COI认知存在

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This paper aims to give instructors the opportunity to analyze learners' cognitive behavior. Thus we propose an automatic system to assess learners' CoI-Cognitive presence regarding their social participation within asynchronous online discussion. Using Natural Language Preprocessing and Machine learning techniques, we first make some pre-processing to the textual data in order to make it clean and understandable, then we represent each discussion transcript with a vector using Doc2Vec-based features method; a document embedding method for document representation; according to some context and LIWC features. Finally, the Na?ve Bayes algorithm is applied to classify messages according to cognitive presence categories.
机译:本文旨在为教师提供分析学习者认知行为的机会。因此,我们提出了一种自动系统,以评估学习者的COI认知在异步在线讨论中的社会参与。使用自然语言预处理和机器学习技术,我们首先对文本数据进行一些预处理,以便使其清洁和可理解,然后我们代表使用基于DOC2VEC的特征方法的向量的每个讨论记录版本;文档表示的文档嵌入方法;根据一些上下文和LIWC功能。最后,将Na ve Bayes算法应用于根据认知存在类别对消息进行分类。

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