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Uma S. Ranjan

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#computer vision Preprint Sep 2026

Occlusal Geometry in Closed Form for Orthodontic Report Generation

Reimplementation of the challenge evaluator shows that its BLEU-4 and METEOR are local variants whose F-mean weights recall nine to one, that two clinicians agree on 47 percent of findings for the same patient, and that a constant report consequently outscores a genuine second clinician report by 0.165 captioning.

A. B. George, Govind Arun, S. N. Krishna et al. · 0 citations
#computer vision Preprint Sep 2026

Clinical Reasoning Under a Partially Observed Objective in Cone Beam CT Report Generation

Maxillofacial report generation from cone beam computed tomography is scored here by a composite objective placing 80% of its weight on a large language model judgement of factual entailment and 20% on lexical overlap, of which only the lexical fifth is visible during development. The grader's BLEU-4 and METEOR routine...

A. B. George, Govind Arun, S. N. Krishna et al. · 0 citations
Preprint Aug 2026

Rethinking LLM Verification: Evidence Structure, Uncertainty, and Selective Refinement

A two-stage framework for medical hypothesis verification in multiple-choice settings that manages this tradeoff through targeted ontology grounding, applied only when the model abstains, and shows that abstention is not random but reflects genuine uncertainty, with abstained predictions associated with lower confidenc...

Uma S. Ranjan, Kunal Tilaganji, Aditya Koul et al. · 0 citations

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