arxiv:2309.16275

UPB @ ACTI: Detecting Conspiracies using fine tuned Sentence Transformers

Published on Sep 28, 2023

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Abstract

A combination of pre-trained sentence Transformer models and data augmentation techniques achieved high F1 scores in both binary and fine-grained conspiracy theory detection tasks.

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Conspiracy theories have become a prominent and concerning aspect of online discourse, posing challenges to information integrity and societal trust. As such, we address conspiracy theory detection as proposed by the ACTI @ EVALITA 2023 shared task. The combination of pre-trained sentence Transformer models and data augmentation techniques enabled us to secure first place in the final leaderboard of both sub-tasks. Our methodology attained F1 scores of 85.71% in the binary classification and 91.23% for the fine-grained conspiracy topic classification, surpassing other competing systems.

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