Exploring formative feedback on textual assignments with the help of automatically created visual representations
Exploring formative feedback on textual assignments with the help of automatically created visual representations
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DOI：
10.1111/j.1365-2729.2011.00425.x
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发表时间：
2012-04-01
影响因子：
5
通讯作者：
Sloep, P. B.
中科院分区：
文献类型：
--
作者：
Berlanga, A. J.;van Rosmalen, P.;Sloep, P. B.
学习者，尤其是终身学习者，常常发现很难确定自己专业知识的范围。形成性反馈可以帮助他们做到这一点。为了有效地使用这些反馈，有必要向他们建议他们需要的补救措施，以克服他们的知识差距。本文介绍了一个支持工具的设计考虑，该工具旨在为文本作业提供形成性反馈。它通过促进学习者输入文本和群体输入文本之间关于预期学习成果的比较来实现这一点。该工具利用语言技术，自动提取输入文本的概念和关系；然后，它创建可以并排放置的视觉表示，以识别概念重叠和缺失的概念。本文首先介绍了该工具的理论基础，特别是关于专业知识开发、知识创造和知识评估的理论基础。然后，它提出了设计方面的考虑，并阐明了工具应该如何工作。接下来，它讨论了一项初步研究的结果，其中词云和概念图已被应用于生成图形视觉表示。这有助于学习者识别重叠和缺失的核心概念，无论是在个别文本还是在汇编的小组文本中。最后，本文给出了结论和今后工作的方向。
Learners, particularly lifelong learners, often find it difficult to determine the scope of their expertise. Formative feedback could help them do so. To use this feedback productively, it is essential to then suggest to them the remedial actions they need to overcome the gaps in their knowledge. This paper presents the design considerations of a support tool that aims at providing formative feedback on textual assignments. It does so by facilitating comparisons between learner's input texts and group input texts with respect to the intended learning outcomes. Using language technologies, the tool automatically extracts the concepts and relations of input texts; it then creates visual representations that can be put side by side to identify conceptual overlaps and missing concepts. The paper first introduces the theoretical underpinnings of the tool specifically those concerning expertise development, knowledge creation and assessment of knowledge. It then draws up design considerations and clarifies how the tool should work. Next, it discusses the results of an initial study in which word clouds and concept maps have been applied to generate graphical visual representations. These help learners identify overlapping and missing core concepts, both in individual texts and in a compiled group text. Finally, the paper provides conclusions and directions for future work.