Latest / AI Ethics with Fexingo: Bias, Safety, and Responsible Artificial Intelligence
How AI Models Learn Bias From Reddit Upvotes
Lucas and Luna explore how upvote-driven platforms like Reddit train AI models to encode popularity bias. They discuss a 2025 study from the University of Washington showing that language models fine-tuned on Reddit comments amplify the most upvoted—not necessarily most accurate—viewpoints, skewing outputs on topics from politics to product reviews. The hosts dive into concrete examples: a model trained on r/askscience threads over-indexing on confidently wrong answers, and an AI chatbot for mental health advice learning to prioritize 'top comment' platitudes over clinical guidance. They…
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