arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2006.00592cs.CYcs.AIcs.HC
收藏

预测视频讲座中的参与度

Predicting Engagement in Video Lectures

University College London(伦敦大学学院)

Sahan Bulathwela, María Pérez-Ortiz, Aldo Lipani, Emine Yilmaz, John Shawe-Taylor

摘要:

近年来,开放教育资源(OERs)的爆炸式增长产生了对可扩展的、自动化的方法来处理和评估OERs的需求,其最终目标是为学习者识别和推荐最合适的教育材料。我们专注于构建模型,以找到上下文无关的参与(即基于人口),一个很少研究的主题相比,其他情境化和个性化的方法,更侧重于个人学习者参与的特点和功能。学习者的参与度,可以说是一个更可靠的衡量标准比流行/意见的数量,是比用户评级更丰富,也已被证明是实现学习成果的一个关键组成部分。在这项工作中,我们探讨了建立一个基于人口的教育参与预测模型的想法。我们引入了一个新的,大型的视频讲座数据集预测上下文无关的参与,并提出了跨模态和模态特定的功能集来实现这一任务。我们进一步测试了不同的策略来量化学习者参与信号。我们展示了我们的方法在数据稀缺的情况下使用。此外,我们执行的最佳性能模型,表现出良好的性能,可以很容易地集成到一个教育推荐系统的OER的敏感性分析。

英文摘要:

The explosion of Open Educational Resources (OERs) in the recent years creates the demand for scalable, automatic approaches to process and evaluate OERs, with the end goal of identifying and recommending the most suitable educational materials for learners. We focus on building models to find the characteristics and features involved in context-agnostic engagement (i.e. population-based), a seldom researched topic compared to other contextualised and personalised approaches that focus more on individual learner engagement. Learner engagement, is arguably a more reliable measure than popularity/number of views, is more abundant than user ratings and has also been shown to be a crucial component in achieving learning outcomes. In this work, we explore the idea of building a predictive model for population-based engagement in education. We introduce a novel, large dataset of video lectures for predicting context-agnostic engagement and propose both cross-modal and modality-specific feature sets to achieve this task. We further test different strategies for quantifying learner engagement signals. We demonstrate the use of our approach in the case of data scarcity. Additionally, we perform a sensitivity analysis of the best performing model, which shows promising performance and can be easily integrated into an educational recommender system for OERs.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑