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Nicholas Sansoterra

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#machine learning Preprint Sep 2026

Seeing Through Conflicts: Improving Instruction Hierarchy Alignment in Vision-Language Models

Instruction hierarchy (IH) alignment teaches language models to prioritize higher-level instructions when inputs conflict. While studied primarily in text-only settings, vision-language models (VLMs) introduce new challenges for IH: instructions may be embedded in images, split across modalities, visually transformed,...

Nicholas Sansoterra, Zi-Shuo Zheng, Sachin Kumar · 0 citations
Open access Jul 2026

Evaluating Classical and Deep Keypoint Detectors for SfM Reconstruction in Arctic UAV Imagery

Abstract. Structure-from-Motion (SfM) pipelines rely heavily on the detection and matching of repeatable keypoints across images, yet the performance of modern learned feature extractors in challenging environments remains insufficiently understood. This paper evaluates classical and deep keypoint detectors for SfM rec...

Nicholas Sansoterra, M. G. Lenzano, William J. Shuart et al. · 0 citations

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