arXiv AI By Lirui Teng

GRIP: Grounded Reasoning via Information-Restricted Premises

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GRIP (Grounded Reasoning via Information-Restricted Premises) addresses the query dominance problem in retrieval-augmented generation by enforcing a capacity asymmetry: the decoder retains full access to the query while retrieved evidence is funneled through a severe stochastic bottleneck. This design forces the evidence channel to encode only residual information not present in the query. On five reasoning benchmarks, GRIP surpasses strong iterative baselines, reduces query–latent mutual information by about 30×, cuts hallucination by 73%, and its bottleneck outputs occupy subspaces less aligned with the query than baseline representations.

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