Orestis Papakyriakopoulos
2024
Resampled Datasets Are Not Enough: Mitigating Societal Bias Beyond Single Attributes
Yusuke Hirota
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Jerone Andrews
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Dora Zhao
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Orestis Papakyriakopoulos
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Apostolos Modas
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Yuta Nakashima
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Alice Xiang
Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing
We tackle societal bias in image-text datasets by removing spurious correlations between protected groups and image attributes. Traditional methods only target labeled attributes, ignoring biases from unlabeled ones. Using text-guided inpainting models, our approach ensures protected group independence from all attributes and mitigates inpainting biases through data filtering. Evaluations on multi-label image classification and image captioning tasks show our method effectively reduces bias without compromising performance across various models. Specifically, we achieve an average societal bias reduction of 46.1% in leakage-based bias metrics for multi-label classification and 74.8% for image captioning.
2020
NLP-based Feature Extraction for the Detection of COVID-19 Misinformation Videos on YouTube
Juan Carlos Medina Serrano
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Orestis Papakyriakopoulos
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Simon Hegelich
Proceedings of the 1st Workshop on NLP for COVID-19 at ACL 2020
We present a simple NLP methodology for detecting COVID-19 misinformation videos on YouTube by leveraging user comments. We use transfer learning pre-trained models to generate a multi-label classifier that can categorize conspiratorial content. We use the percentage of misinformation comments on each video as a new feature for video classification.
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Co-authors
- Yusuke Hirota 1
- Jerone Andrews 1
- Dora Zhao 1
- Apostolos Modas 1
- Yuta Nakashima 1
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