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Understanding and Countering Problematic Information on Social Media Platforms



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Online social media platforms have brought numerous positive changes, including access to vast amounts of news and information. Yet, those very opportunities have created new challenges—our information ecosystem is now rife with problematic content, ranging from misinformation, conspiracy theories, to hateful and incendiary propaganda. As a social computing researcher, Dr. Mitra’s work introduces computational methods and systems to understand and design defenses against such problematic online content. In this talk, she will focus on two aspects of problematic online information: 1) conspiracy theories and 2) extremist propaganda.

First, leveraging data spanning millions of conspiratorial posts on Reddit, 4chan, and 8chan, Dr. Mitra will present scalable methods to unravel who participates in online conspiratorial discussions, what causes users to join conspiratorial communities and then potentially abandon them. Second, she will dive into a special type of problematic content: extremist hate groups. Merging theories from social movement research with big data analyses, Dr. Mitra will discuss the ecosystem of extremists’ communication and the roles played by them. Finally, she will close by previewing important new opportunities to address some of these problems, including conducting social audits to defend against algorithmically generated misinformation and designing socio-technical interventions to promote meaningful credibility assessment of information.
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Web design
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