Unsupervised Story Discovery from Continuous News Streams via Scalable Thematic Embedding
Unsupervised Story Discovery from Continuous News Streams via Scalable Thematic Embedding
复制标题
通过可扩展的主题嵌入从连续新闻流中无监督地发现故事
DOI:
10.1145/3539618.3591782
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Han, Jiawei
中科院分区:
文献类型:
--
作者:
Yoon, Susik;Lee, Dongha;Zhang, Yunyi;Han, Jiawei
Unsupervised discovery of stories with correlated news articles in real-time helps people digest massive news streams without expensive human annotations. A common approach of the existing studies for unsupervised online story discovery is to represent news articles with symbolic- or graph-based embedding and incrementally cluster them into stories. Recent large language models are expected to improve the embedding further, but a straightforward adoption of the models by indiscriminately encoding all information in articles is ineffective to deal with text-rich and evolving news streams. In this work, we propose a novel thematic embedding with an off-the-shelf pretrained sentence encoder to dynamically represent articles and stories by considering their shared temporal themes. To realize the idea for unsupervised online story discovery, a scalable framework USTORY is introduced with two main techniques, theme- and time-aware dynamic embedding and novelty-aware adaptive clustering, fueled by lightweight story summaries. A thorough evaluation with real news data sets demonstrates that USTORY achieves higher story discovery performances than baselines while being robust and scalable to various streaming settings.
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DOI:
10.1145/3543507.3583371
发表时间:
2023-02
期刊:
Proceedings of the ACM Web Conference 2023
影响因子:
--
作者:
Susik Yoon;Hou Pong Chan;Jiawei Han
通讯作者:
Susik Yoon;Hou Pong Chan;Jiawei Han
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
M. Trampus;B. Novak
通讯作者:
B. Novak
影响因子:
2.5
作者:
Fritz, Manuel;Behringer, Michael;Schwarz, Holger
通讯作者:
Schwarz, Holger
DOI:
10.18653/v1/d18-1483
发表时间:
2018-09
期刊:
--
影响因子:
--
作者:
Sebastião Miranda;Arturs Znotins;Shay B. Cohen;Guntis Barzdins
通讯作者:
Sebastião Miranda;Arturs Znotins;Shay B. Cohen;Guntis Barzdins
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
Fukuzawa;K.;Dannoura;M. and Shibata;H
通讯作者:
H