Team Kermit-the-frog at SemEval-2019 Task 4: Bias Detection Through Sentiment Analysis and Simple Linguistic Features

Talita Anthonio, Lennart Kloppenburg


Abstract
In this paper we describe our participation in the SemEval 2019 shared task on hyperpartisan news detection. We present the system that we submitted for final evaluation and the three approaches that we used: sentiment, bias-laden words and filtered n-gram features. Our submitted model is a Linear SVM that solely relies on the negative sentiment of a document. We achieved an accuracy of 0.621 and a f1 score of 0.694 in the competition, revealing the predictive power of negative sentiment for this task. There was no major improvement by adding or substituting the features of the other two approaches that we tried.
Anthology ID:
S19-2177
Volume:
Proceedings of the 13th International Workshop on Semantic Evaluation
Month:
June
Year:
2019
Address:
Minneapolis, Minnesota, USA
Editors:
Jonathan May, Ekaterina Shutova, Aurelie Herbelot, Xiaodan Zhu, Marianna Apidianaki, Saif M. Mohammad
Venue:
SemEval
SIG:
SIGLEX
Publisher:
Association for Computational Linguistics
Note:
Pages:
1016–1020
Language:
URL:
https://aclanthology.org/S19-2177
DOI:
10.18653/v1/S19-2177
Bibkey:
Cite (ACL):
Talita Anthonio and Lennart Kloppenburg. 2019. Team Kermit-the-frog at SemEval-2019 Task 4: Bias Detection Through Sentiment Analysis and Simple Linguistic Features. In Proceedings of the 13th International Workshop on Semantic Evaluation, pages 1016–1020, Minneapolis, Minnesota, USA. Association for Computational Linguistics.
Cite (Informal):
Team Kermit-the-frog at SemEval-2019 Task 4: Bias Detection Through Sentiment Analysis and Simple Linguistic Features (Anthonio & Kloppenburg, SemEval 2019)
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PDF:
https://aclanthology.org/S19-2177.pdf