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arXiv · 2401.06683

DQNC2S: DQN-based Cross-stream Crisis event Summarizer

Daniele Rege Cambrin·Luca Cagliero·Paolo Garza
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Abstract

Summarizing multiple disaster-relevant data streams simultaneously is particularly challenging as existing Retrieve&Re-ranking strategies suffer from the inherent redundancy of multi-stream data and limited scalability in a multi-query setting. This work proposes an online approach to crisis timeline generation based on weak annotation with Deep Q-Networks. It selects on-the-fly the relevant pieces of text without requiring neither human annotations nor content re-ranking. This makes the inference time independent of the number of input queries. The proposed approach also incorporates a redundancy filter into the reward function to effectively handle cross-stream content overlaps. The achieved ROUGE and BERTScore results are superior to those of best-performing models on the CrisisFACTS 2022 benchmark.

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BibTeXRIS

Daniele Rege Cambrin, Luca Cagliero, Paolo Garza. 2024-01-12. DQNC2S: DQN-based Cross-stream Crisis event Summarizer. https://doi.org/10.1007/978-3-031-56063-7_34

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