NSIT@NLP4IF-2019: Propaganda Detection from News Articles using Transfer Learning

Kartik Aggarwal, Anubhav Sadana


Abstract
In this paper, we describe our approach and system description for NLP4IF 2019 Workshop: Shared Task on Fine-Grained Propaganda Detection. Given a sentence from a news article, the task is to detect whether the sentence contains a propagandistic agenda or not. The main contribution of our work is to evaluate the effectiveness of various transfer learning approaches like ELMo, BERT, and RoBERTa for propaganda detection. We show the use of Document Embeddings on the top of Stacked Embeddings combined with LSTM for identification of propagandistic context in the sentence. We further provide analysis of these models to show the effect of oversampling on the provided dataset. In the final test-set evaluation, our system ranked 21st with F1-score of 0.43 in the SLC Task.
Anthology ID:
D19-5021
Volume:
Proceedings of the Second Workshop on Natural Language Processing for Internet Freedom: Censorship, Disinformation, and Propaganda
Month:
November
Year:
2019
Address:
Hong Kong, China
Editors:
Anna Feldman, Giovanni Da San Martino, Alberto Barrón-Cedeño, Chris Brew, Chris Leberknight, Preslav Nakov
Venue:
NLP4IF
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
143–147
Language:
URL:
https://aclanthology.org/D19-5021
DOI:
10.18653/v1/D19-5021
Bibkey:
Cite (ACL):
Kartik Aggarwal and Anubhav Sadana. 2019. NSIT@NLP4IF-2019: Propaganda Detection from News Articles using Transfer Learning. In Proceedings of the Second Workshop on Natural Language Processing for Internet Freedom: Censorship, Disinformation, and Propaganda, pages 143–147, Hong Kong, China. Association for Computational Linguistics.
Cite (Informal):
NSIT@NLP4IF-2019: Propaganda Detection from News Articles using Transfer Learning (Aggarwal & Sadana, NLP4IF 2019)
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PDF:
https://aclanthology.org/D19-5021.pdf