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Shunya Nagashima

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#machine learning Preprint Sep 2026

PoE-Fuse: Precision-Weighted Expert Fusion for Bi-Temporal Change Understanding

Bi-temporal change understanding, which localizes and characterizes what changed between two satellite images, is central to disaster response and environmental monitoring, spanning change detection, building localization, and damage assessment. Strong vision-language models address these tasks, but adapting them typic...

Haruki Watase, Shunya Nagashima, T. Nishimura · 0 citations
#computer vision Preprint Sep 2026

FORUM: Frozen Outputs Reconciled Using Model Agreement for Visual Grounding

ForUM is presented, a training-free test-time fusion of frozen MLLMs guided by two fixed geometric rules: agreement-based selection keeps the region supported by the most distinct models, and medoid localization returns an actual member box instead of a coordinate average, so one loose prediction cannot shift the answe...

Taiyo Sato, Takamasa Sanda, Keisuke Maeda et al. · 0 citations
#artificial intelligence Preprint Sep 2026

TERN: A Delta-rule Memory with a Seasonal Reference and Online Adaptation for Epidemic Forecasting

TERN, a forecaster built around a delta-rule fast-weight memory that decays channel-wise and erases along a learned address under gates driven by local epidemic-phase features, is proposed, combined with an explicit seasonal reference and online adaptation.

Shunya Nagashima, Yuta Funayama · 0 citations
Open access Oct 2025

Cortical-SSM: a deep state space model for motor imagery decoding from EEG signals

Objective. Classification of electroencephalogram (EEG) signals obtained during motor imagery (MI) has substantial application potential, including for communication assistance and rehabilitation support for patients with motor impairments. These signals remain inherently susceptible to physiological artifacts (e.g. ey...

Shuntaro Suzuki, Shunya Nagashima, Komei Sugiura · 0 citations

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