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Kundan Thind

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#machine learning Preprint Oct 2026

INCONVENIENT: A Benchmark to Assess LLM Generalization Capabilities from Convenience Samples

INCONVENIENT is introduced, a benchmark designed to study robustness to convenience-sample bias and provides explicit control over both the direction and severity of relationship shifts, enabling a systematic assessment of robustness to convenience sampling.

Sara Rezaeimanesh, C. Klochko, Kundan Thind et al. · 0 citations
Open access Sep 2026

Local large language model‐guided optimization for prostate radiotherapy planning

Radiotherapy planning is time‐intensive, iterative, and operator‐dependent. Locally deployed large language‐model agents may support planning automation while avoiding transmission of patient data to external model providers.

H. Nusrat, Bing Luo, H. Bagher-Ebadian et al. · 0 citations
Open access Sep 2026

Stereotactic radiosurgery plan optimization with a human-in-the-loop reasoning large language model agent

Large language model agents can adjust optimization parameters in a treatment planning system under natural-language instruction, but no study has tested a model post-trained for extended reasoning against a general-purpose model in stereotactic radiosurgery. We compared a reasoning-optimized model (QwQ-32B) with a...

H. Nusrat, Luke Francisco, Bing Luo et al. · 0 citations
Open access Aug 2026

A neighborhood attention transformer network for enhanced 3D segmentation of the left anterior descending artery.

NA-UNETR effectively balances local precision and global context, enabling accurate segmentation of thin, low-contrast LAD structures and demonstrates a robust and computationally efficient framework for substructure-level cardiac segmentation in radiotherapy planning.

Rafi Ibn Sultan, Chengyin Li, Yiannos Demetriou et al. · 1 citation
Open access Sep 2026

Cross‐fraction prior learning for scalable organ‐at‐risk segmentation in abdominal MR‐guided radiotherapy

Manual organ‐at‐risk (OAR) delineation takes 20–40 min per case, a major bottleneck within the 50–90 min treatment window of abdominal MR‐guided adaptive radiotherapy (MRgRT). Most deep learning systems adopt single‐fraction approaches that discard valuable temporal context from prior treatment fractions.

Chengyin Li, D. Rusu, Rafi Ibn Sultan et al. · 0 citations
#natural language process... Preprint Aug 2026

Model Confidence Under Answer-Preserving Attacks: An Informativeness-Manipulability Frontier

Deployed vision-language systems often gate their answers on confidence, making confidence robustness relevant to oversight. We study confidence readouts under white-box, image-only attacks constrained to preserve the generated answer byte-identically. Under a reachability assumption, an unmovable readout cannot outper...

Mohammad M. Ghassemi, Ivan Brugere, Simerjot Kaur et al. · 0 citations

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