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arXiv 2008.13544cs.CLcs.AIcs.IRcs.LGstat.ML
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I-AID:从灾害相关推文中识别可操作信息

I-AID: Identifying Actionable Information from Disaster-related Tweets

Paderborn University(帕德博恩大学);Menoufia University(梅努菲亚大学)

Hamada M. Zahera, Rricha Jalota, Mohamed A. Sherif, Axel N. Ngomo

摘要:

社交媒体在灾害管理中发挥着重要作用,提供有关受灾人员、捐款和帮助请求的宝贵数据。最近的研究强调需要将社交媒体上的信息过滤成细粒度的内容标签。然而,在危机期间从大量社交媒体帖子中识别有用信息是一项具有挑战性的任务。在本文中,我们提出了I-AID,一个多模型的方法来自动分类的推文到多标签的信息类型和过滤的关键信息,从大量的社交媒体数据。I-AID包含三个主要组件:i)基于BERT的编码器,用于捕获推文的语义并表示为低维向量; ii)图形注意力网络(GAT),用于理解推文的单词/实体与相应信息类型之间的相关性;以及iii)关系网络,作为可学习的距离度量,用于以监督的方式计算推文与其相应信息类型之间的相似性。我们在两个真实的公开数据集上进行了几次实验。我们的研究结果表明,I-AID在TREC-IS数据集和COVID-19推文的加权平均F1得分方面分别优于最先进的方法+6%和+4%。

英文摘要:

Social media plays a significant role in disaster management by providing valuable data about affected people, donations and help requests. Recent studies highlight the need to filter information on social media into fine-grained content labels. However, identifying useful information from massive amounts of social media posts during a crisis is a challenging task. In this paper, we propose I-AID, a multimodel approach to automatically categorize tweets into multi-label information types and filter critical information from the enormous volume of social media data. I-AID incorporates three main components: i) a BERT-based encoder to capture the semantics of a tweet and represent as a low-dimensional vector, ii) a graph attention network (GAT) to apprehend correlations between tweets' words/entities and the corresponding information types, and iii) a Relation Network as a learnable distance metric to compute the similarity between tweets and their corresponding information types in a supervised way. We conducted several experiments on two real publicly-available datasets. Our results indicate that I-AID outperforms state-of-the-art approaches in terms of weighted average F1 score by +6% and +4% on the TREC-IS dataset and COVID-19 Tweets, respectively.

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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