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CrisisLTLSum: A Benchmark for Local Crisis Event Timeline Extraction and Summarization

Hossein Rajaby Faghihi, Bashar Alhafni, Ke Zhang, Shihao Ran, Joel Tetreault, Alejandro Jaimes


Abstract
Social media has increasingly played a key role in emergency response: first responders can use public posts to better react to ongoing crisis events and deploy the necessary resources where they are most needed. Timeline extraction and abstractive summarization are critical technical tasks to leverage large numbers of social media posts about events. Unfortunately, there are few datasets for benchmarking technical approaches for those tasks. This paper presents , the largest dataset of local crisis event timelines available to date. contains 1,000 crisis event timelines across four domains: wildfires, local fires, traffic, and storms. We built using a semi-automated cluster-then-refine approach to collect data from the public Twitter stream. Our initial experiments indicate a significant gap between the performance of strong baselines compared to the human performance on both tasks.Our dataset, code, and models are publicly available (https://github.com/CrisisLTLSum/CrisisTimelines).
Anthology ID:
2022.findings-emnlp.400
Volume:
Findings of the Association for Computational Linguistics: EMNLP 2022
Month:
December
Year:
2022
Address:
Abu Dhabi, United Arab Emirates
Editors:
Yoav Goldberg, Zornitsa Kozareva, Yue Zhang
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
5455–5477
Language:
URL:
https://aclanthology.org/2022.findings-emnlp.400
DOI:
10.18653/v1/2022.findings-emnlp.400
Bibkey:
Cite (ACL):
Hossein Rajaby Faghihi, Bashar Alhafni, Ke Zhang, Shihao Ran, Joel Tetreault, and Alejandro Jaimes. 2022. CrisisLTLSum: A Benchmark for Local Crisis Event Timeline Extraction and Summarization. In Findings of the Association for Computational Linguistics: EMNLP 2022, pages 5455–5477, Abu Dhabi, United Arab Emirates. Association for Computational Linguistics.
Cite (Informal):
CrisisLTLSum: A Benchmark for Local Crisis Event Timeline Extraction and Summarization (Rajaby Faghihi et al., Findings 2022)
Copy Citation:
PDF:
https://aclanthology.org/2022.findings-emnlp.400.pdf
Video:
 https://aclanthology.org/2022.findings-emnlp.400.mp4