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Abstract
Emotion detection is an important task that can be applied to social media data to discover new knowledge. While the use of deep learning methods for this task has been prevalent, they are black-box models, making their decisions hard to interpret for a human operator. Therefore, in this paper, we propose an approach using weighted k Nearest Neighbours (kNN), a simple, easy to implement, and explainable machine learning model. These qualities can help to enhance results’ reliability and guide error analysis. In particular, we apply the weighted kNN model to the shared emotion detection task in tweets from SemEval-2018. Tweets are represented using different text embedding methods and emotion lexicon vocabulary scores, and classification is done by an ensemble of weighted kNN models. Our best approaches obtain results competitive with state-of-the-art solutions and open up a promising alternative path to neural network methods.

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MLA
Kaminska, Olha, et al. “Nearest Neighbour Approaches for Emotion Detection in Tweets.” Proceedings of the Eleventh Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis (EACL 2021), Association for Computational Linguistics, 2021, pp. 203–12.
APA
Kaminska, O., Cornelis, C., & Hoste, V. (2021). Nearest neighbour approaches for emotion detection in tweets. Proceedings of the Eleventh Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis (EACL 2021), 203–212. Association for Computational Linguistics.
Chicago author-date
Kaminska, Olha, Chris Cornelis, and Veronique Hoste. 2021. “Nearest Neighbour Approaches for Emotion Detection in Tweets.” In Proceedings of the Eleventh Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis (EACL 2021), 203–12. Association for Computational Linguistics.
Chicago author-date (all authors)
Kaminska, Olha, Chris Cornelis, and Veronique Hoste. 2021. “Nearest Neighbour Approaches for Emotion Detection in Tweets.” In Proceedings of the Eleventh Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis (EACL 2021), 203–212. Association for Computational Linguistics.
Vancouver
1.
Kaminska O, Cornelis C, Hoste V. Nearest neighbour approaches for emotion detection in tweets. In: Proceedings of the Eleventh Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis (EACL 2021). Association for Computational Linguistics; 2021. p. 203–12.
IEEE
[1]
O. Kaminska, C. Cornelis, and V. Hoste, “Nearest neighbour approaches for emotion detection in tweets,” in Proceedings of the Eleventh Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis (EACL 2021), Online, 2021, pp. 203–212.
@inproceedings{8711408,
  abstract     = {{Emotion detection is an important task that can be applied to social media data to discover new knowledge. While the use of deep learning methods for this task has been prevalent, they are black-box models, making their decisions hard to interpret for a human operator. Therefore, in this paper, we propose an approach using weighted k Nearest Neighbours (kNN), a simple, easy to implement, and explainable machine learning model. These qualities can help to enhance results’ reliability and guide error analysis. In particular, we apply the weighted kNN model to the shared emotion detection task in tweets from SemEval-2018. Tweets are represented using different text embedding methods and emotion lexicon vocabulary scores, and classification is done by an ensemble of weighted kNN models. Our best approaches obtain results competitive with state-of-the-art solutions and open up a promising alternative path to neural network methods.}},
  author       = {{Kaminska, Olha and Cornelis, Chris and Hoste, Veronique}},
  booktitle    = {{Proceedings of the Eleventh Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis (EACL 2021)}},
  isbn         = {{9781954085183}},
  language     = {{eng}},
  location     = {{Online}},
  pages        = {{203--212}},
  publisher    = {{Association for Computational Linguistics}},
  title        = {{Nearest neighbour approaches for emotion detection in tweets}},
  url          = {{https://aclanthology.org/2021.wassa-1.22}},
  year         = {{2021}},
}