A 1:4 debias-to-reasoning training mix under GRPO reinforcement learning yields the best bias-reasoning trade-off in small MLLMs, cutting measured stereotype scores by about 10% while retaining about 88% of reasoning accuracy.
Bow- man, Julian Michael, Ethan Perez, and Miles Turpin
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FairReason: Balancing Reasoning and Social Bias in MLLMs
A 1:4 debias-to-reasoning training mix under GRPO reinforcement learning yields the best bias-reasoning trade-off in small MLLMs, cutting measured stereotype scores by about 10% while retaining about 88% of reasoning accuracy.