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 [BibTeX] [Marc21]
IDIAPers @ Causal News Corpus 2022: Extracting Cause-Effect-Signal Triplets via Pre-trained Autoregressive Language Model
Type of publication: Conference paper
Citation: Fajcik_CASE@EMNLP2022_2022
Booktitle: The 5th Workshop on Challenges and Applications of Automated Extraction of Socio-political Events from Text (CASE @ EMNLP 2022)
Year: 2022
Month: December
Note: ACL Anthology (https://aclanthology.org/2022.case-1.10)
Crossref: Fajcik_Idiap-RR-12-2022:
URL: https://preview.aclanthology.o...
Abstract: In this paper, we describe our shared task submissions for Subtask 2 in CASE-2022, Event Causality Identification with Casual News Corpus. The challenge focused on the automatic detection of all cause-effect-signal spans present in the sentence from news-media. We detect cause-effect-signal spans in a sentence using T5 -- a pre-trained autoregressive language model. We iteratively identify all cause-effect-signal span triplets, always conditioning the prediction of the next triplet on the previously predicted ones. To predict the triplet itself, we consider different causal relationships such as cause→effect→signal. Each triplet component is generated via a language model conditioned on the sentence, the previous parts of the current triplet, and previously predicted triplets. Despite training on an extremely small dataset of 160 samples, our approach achieved competitive performance, being placed second in the competition. Furthermore, we show that assuming either cause→effect or effect→cause order achieves similar results.
Authors Fajcik, Martin
Singh, Muskaan
Juan, Zuluaga-Gomez.
Burdisso, Sergio
Motlicek, Petr
Smrz, Pavel
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Total mark: 0