arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1712.04443cs.SIcs.AIcs.LG
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基于深度时间上下文网络的社交媒体流行度序贯预测

Sequential Prediction of Social Media Popularity with Deep Temporal Context Networks

Institute of Computing Technology, Chinese Academy of Sciences(中国科学院计算技术研究所);University of Chinese Academy of Sciences(中国科学院大学);Academia Sinica(中央研究院);University of Surrey(萨里大学);Microsoft Research(微软研究院)

Bo Wu, Wen-Huang Cheng, Yongdong Zhang, Qiushi Huang, Jintao Li, Tao Mei

摘要:

流行度的预测对社交媒体有着深远的影响,因为它提供了从进化的社会系统中揭示个人偏好和公众关注的机会。以前的研究,虽然取得了可喜的成果,但忽略了社会数据的一个显著特征,即,顺序性例如,随着时间的推移,在线内容的流行度随着社交媒体的连续发布流而产生。为了研究流行度的顺序预测,我们提出了一种新的预测框架,称为深度时间上下文网络(DTCN),将时间上下文和时间注意力考虑在内。我们的DTCN包含三个主要组件,从嵌入,学习到预测。通过联合嵌入网络,我们在公共嵌入空间中获得了多模态用户帖子数据的统一深度表示。然后,基于随时间的嵌入数据序列,时间上下文学习尝试递归地学习两个自适应时间上下文以获得顺序流行度。最后,一种新的时间注意力被设计来预测新的流行度(一个新的用户帖子对的流行度)与跨多个时间尺度的时间相干性。在我们发布的约60万张Flickr照片的图像数据集上进行的实验表明,DTCN的性能优于最先进的深度预测算法,在流行度预测(斯皮尔曼排名相关性)方面平均相对性能提高了21.51%。

英文摘要:

Prediction of popularity has profound impact for social media, since it offers opportunities to reveal individual preference and public attention from evolutionary social systems. Previous research, although achieves promising results, neglects one distinctive characteristic of social data, i.e., sequentiality. For example, the popularity of online content is generated over time with sequential post streams of social media. To investigate the sequential prediction of popularity, we propose a novel prediction framework called Deep Temporal Context Networks (DTCN) by incorporating both temporal context and temporal attention into account. Our DTCN contains three main components, from embedding, learning to predicting. With a joint embedding network, we obtain a unified deep representation of multi-modal user-post data in a common embedding space. Then, based on the embedded data sequence over time, temporal context learning attempts to recurrently learn two adaptive temporal contexts for sequential popularity. Finally, a novel temporal attention is designed to predict new popularity (the popularity of a new user-post pair) with temporal coherence across multiple time-scales. Experiments on our released image dataset with about 600K Flickr photos demonstrate that DTCN outperforms state-of-the-art deep prediction algorithms, with an average of 21.51% relative performance improvement in the popularity prediction (Spearman Ranking Correlation).

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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