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Siddharth Vohra

Carnegie Mellon University

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#natural language process... Preprint Sep 2026

When Models Defer to Wrong Answers: A Robustness Audit of Source-Attributed Cues in Multiple-Choice QA

Language models often receive a question together with a claim about what another source answered. We audit whether such claims destabilize answers in multiple-choice question answering. For each item, we hold one wrong option fixed across misleading conditions and vary the cue template attached to it. We introduce \em...

Manikandan Ravikiran, Siddharth Vohra · 0 citations
#artificial intelligence Preprint Sep 2026

The Audit Decides the Verdict: Instrument Effects Rival Demographic Bias in LLM Decision Audits

Whether a language model looks demographically biased can depend on how the audit asks its question. A charitable-aid benchmark reports that the same models favor minority applicants when rating requests one at a time and penalize some when ranking side by side. We test whether that reversal generalizes to hiring, lend...

Siddharth Vohra, Manikandan Ravikiran · 0 citations
#artificial intelligence Preprint Sep 2026

Does the Selected Object Reach the Reader? Auditing Identity Handoffs in Grounded Language-Model Pipelines

Grounded language-model pipelines can be divided into three stages: selecting an object, retrieving passages for it, and using that evidence to answer. If the selected object must reach the reader, losing it breaks the handoff. Benchmark recall checks the dataset-linked object, which can differ. We audit 600 HybridQA q...

Siddharth Vohra, Run-Min Jiang, Xiao-Mo Li et al. · 0 citations
Jul 2026

Hearsay: Vision-Language Medical Diagnoses Without an Image

Claude's dermatology effect collapses entirely when'skin mole'is swapped for'skin lesion'while GPT-5.4's is preserved, indicating that mirage is a family of distinct failure modes rather than a single phenomenon.

Siddharth Vohra · 0 citations

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