Author

Graham Horwood

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#artificial intelligence Preprint Sep 2026

Knowing When Not to Answer: Abstention and Refusal Reasoning in Vision--Language Models

PARITY (Paired Assessment with Reused Identity), a synthetic, demographically balanced set of identity-controlled neutral/expression portrait pairs with neutral-neutral controls, is introduced, finding a clear split between refusal-first models and speculative models; in the latter, certain expressions disproportionate...

Karan Dua, Amit Agarwal, Hitesh Laxmichand Patel et al. · 0 citations

Preprint Aug 2026

PLSQLBench: Benchmarking LLM Systems for Executable Procedural Database Programming

PLSQLBench is the first benchmark for evaluating whether LLMs can write executable PL/SQL programs, with correctness measured through execution-based tests, and recurring difficulties in schema grounding, PL/SQL dialect fidelity, procedural control flow, exception handling, and cross-turn consistency are revealed.

Marianne Menglin Liu, Leonid Boytsov, Daniel W. Peterson et al. · 0 citations