Enhancing the fairness of offensive memes detection models by mitigating unintended political bias

IF 2.3 3区 计算机科学 Q3 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Journal of Intelligent Information Systems Pub Date : 2024-01-06 DOI:10.1007/s10844-023-00834-9
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Abstract

This paper tackles the critical challenge of detecting and mitigating unintended political bias in offensive meme detection. Political memes are a powerful tool that can be used to influence public opinion and disrupt voters’ mindsets. However, current visual-linguistic models for offensive meme detection exhibit unintended bias and struggle to accurately classify non-offensive and offensive memes. This can harm the fairness of the democratic process either by targeting minority groups or promoting harmful political ideologies. With Hindi being the fifth most spoken language globally and having a significant number of native speakers, it is essential to detect and remove Hindi-based offensive memes to foster a fair and equitable democratic process. To address these concerns, we propose three debiasing techniques to mitigate the overrepresentation of majority group perspectives while addressing the suppression of minority opinions in political discourse. To support our approach, we curate a comprehensive dataset called Pol_Off_Meme, designed especially for the Hindi language. Empirical analysis of this dataset demonstrates the efficacy of our proposed debiasing techniques in reducing political bias in internet memes, promoting a fair and equitable democratic environment. Our debiased model, named \(DRTIM^{Adv}_{Att}\) , exhibited superior performance compared to the CLIP-based baseline model. It achieved a significant improvement of +9.72% in the F1-score while reducing the False Positive Rate Difference (FPRD) by -16% and the False Negative Rate Difference (FNRD) by -14.01%. Our efforts strive to cultivate a more informed and inclusive political discourse, ensuring that all opinions, irrespective of their majority or minority status, receive adequate attention and representation.

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通过减少意外的政治偏见,提高攻击性备忘录检测模型的公平性
摘要 本文探讨了在攻击性备忘录检测中检测和减轻意外政治偏见这一关键挑战。政治备忘录是一种强大的工具,可以用来影响公众舆论和扰乱选民的心态。然而,目前用于检测冒犯性备忘录的视觉语言学模型表现出了意外的偏见,难以准确地对非冒犯性备忘录和冒犯性备忘录进行分类。这可能会损害民主进程的公平性,要么针对少数群体,要么宣扬有害的政治意识形态。印地语是全球使用人数最多的第五大语言,母语使用者人数众多,因此必须检测和删除基于印地语的攻击性备忘录,以促进公平公正的民主进程。为了解决这些问题,我们提出了三种去污技术,以减轻多数群体观点的过度代表性,同时解决政治话语中对少数群体观点的压制问题。为了支持我们的方法,我们专门为印地语设计了一个名为 Pol_Off_Meme 的综合数据集。对该数据集的实证分析表明,我们提出的去中心化技术能有效减少网络备忘录中的政治偏见,促进公平公正的民主环境。与基于CLIP的基线模型相比,我们的去除法模型(名为\(DRTIM^{Adv}_{Att}\))表现出了更优越的性能。它的 F1 分数大幅提高了 9.72%,同时假阳性率差异(FPRD)降低了 -16%,假阴性率差异(FNRD)降低了 -14.01%。我们的努力旨在培养一种更加知情和包容的政治话语,确保所有意见,无论其处于多数还是少数地位,都能得到充分的关注和代表。
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来源期刊
Journal of Intelligent Information Systems
Journal of Intelligent Information Systems 工程技术-计算机:人工智能
CiteScore
7.20
自引率
11.80%
发文量
72
审稿时长
6-12 weeks
期刊介绍: The mission of the Journal of Intelligent Information Systems: Integrating Artifical Intelligence and Database Technologies is to foster and present research and development results focused on the integration of artificial intelligence and database technologies to create next generation information systems - Intelligent Information Systems. These new information systems embody knowledge that allows them to exhibit intelligent behavior, cooperate with users and other systems in problem solving, discovery, access, retrieval and manipulation of a wide variety of multimedia data and knowledge, and reason under uncertainty. Increasingly, knowledge-directed inference processes are being used to: discover knowledge from large data collections, provide cooperative support to users in complex query formulation and refinement, access, retrieve, store and manage large collections of multimedia data and knowledge, integrate information from multiple heterogeneous data and knowledge sources, and reason about information under uncertain conditions. Multimedia and hypermedia information systems now operate on a global scale over the Internet, and new tools and techniques are needed to manage these dynamic and evolving information spaces. The Journal of Intelligent Information Systems provides a forum wherein academics, researchers and practitioners may publish high-quality, original and state-of-the-art papers describing theoretical aspects, systems architectures, analysis and design tools and techniques, and implementation experiences in intelligent information systems. The categories of papers published by JIIS include: research papers, invited papters, meetings, workshop and conference annoucements and reports, survey and tutorial articles, and book reviews. Short articles describing open problems or their solutions are also welcome.
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