Dongseok Lee
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126
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ML×1AI×1
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2026
LaRA: Layer-wise Representation Analysis for Detecting Data Contamination in RL Post-Training
The paper proposes LaRA, a layer-wise representation analysis framework that detects data contamination in RL post-trained LLMs by analyzing geometric deviations across model layers.
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Papers
cs.LGcs.AIRecentMay 28, 2026
LaRA: Layer-wise Representation Analysis for Detecting Data Contamination in RL Post-Training
Minju Gwak, Minseo Kwak, Dongseok Lee, Guijin Son +2 more
The paper proposes LaRA, a layer-wise representation analysis framework that detects data contamination in RL post-trained LLMs by analyzing geometric deviations across model layers.
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