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Divyansh Singh

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#natural language process... Preprint Sep 2026

LeakScale: Estimating the Causal Effect of Benchmark Exposure

Evidence that evaluation material entered training does not reveal how much it affected evaluation. This distinction leaves a contaminated benchmark score difficult to interpret: provenance can establish contact, but only a counterfactual can quantify the performance attributable to that contact. We present LeakScale,...

Divyansh Singh · 0 citations
Preprint Aug 2026

Evidence Lock Before Commitment: A Frozen Interface Degrades LLM-as-Judge Evaluation

This work compares standard pairwise judging, structured one-call judging, two-call evidence locking, and three-call pointwise locking with Claude Sonnet 4.5 and GPT-5 to test an observable alternative: persist the evidence in one call and make it the exclusive input to the next.

Divyansh Singh · 0 citations

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