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arXiv 2301.01606cs.SI
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预测社会学习网络中的学习交互:一种支持深度学习的方法

Predicting Learning Interactions in Social Learning Networks: A Deep Learning Enabled Approach

Rajeev Sahay, Serena Nicoll, Minjun Zhang, Tsung-Yen Yang, Carlee Joe-Wong, Kerrie A. Douglas, Christopher G Brinton

摘要:

我们考虑预测社会学习网络(SLN)中链接形成的问题,SLN是一种当人们通过结构化交互相互学习时形成的社会网络。虽然链接预测已经研究了一般类型的社交网络,SLN在其生命周期的演变,加上他们的依赖,正在讨论的主题提出了新的挑战,这种类型的网络。为了解决这些挑战,我们开发了一系列自主链接预测方法,这些方法利用空间和时间演进的网络架构来在空间和时间段之间传递网络状态,并且对在每个周期中更新的三种类型的SLN特征进行建模:基于邻域的(例如,资源分配),基于路径的(例如,最短路径),以及基于后的(例如,主题相似性)。通过对来自大规模开放在线课程(MOOC)讨论论坛和普渡大学的六个真实世界数据集的评估,我们发现我们的方法比贝叶斯模型,线性分类器和图神经网络有了实质性的改进,AUC通常在0.91以上,并根据数据集达到0.99。我们的特征重要性分析表明,虽然基于邻域和路径的特征对结果贡献最大,但基于后的特征添加了可能并不总是与链接预测相关的额外信息。

英文摘要:

We consider the problem of predicting link formation in Social Learning Networks (SLN), a type of social network that forms when people learn from one another through structured interactions. While link prediction has been studied for general types of social networks, the evolution of SLNs over their lifetimes coupled with their dependence on which topics are being discussed presents new challenges for this type of network. To address these challenges, we develop a series of autonomous link prediction methodologies that utilize spatial and time-evolving network architectures to pass network state between space and time periods, and that models over three types of SLN features updated in each period: neighborhood-based (e.g., resource allocation), path-based (e.g., shortest path), and post-based (e.g., topic similarity). Through evaluation on six real-world datasets from Massive Open Online Course (MOOC) discussion forums and from Purdue University, we find that our method obtains substantial improvements over Bayesian models, linear classifiers, and graph neural networks, with AUCs typically above 0.91 and reaching 0.99 depending on the dataset. Our feature importance analysis shows that while neighborhood and path-based features contribute the most to the results, post-based features add additional information that may not always be relevant for link prediction.

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。

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