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Junghwan Park

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#machine learning Preprint Oct 2026

Platonic Task Arithmetic

Distinct pre-trained models specialized for the same task converge to closely similar behavior, yet the parameter updates that produce it share no common coordinate system. Weight-space task arithmetic is therefore confined to a single model, and transporting an update between models requires a structural correspondenc...

Junghwan Park, Woojin Cho · 0 citations
Preprint Aug 2026

ELMZip: Onboard Satellite Image Compression via Extreme Learning Machines for Efficient Downlink

ELMZip formulates the fitting process as a convex least-squares problem using random-feature single-layer networks, thereby eliminating the need for computationally expensive backpropagation and achieves significant compression efficiency while maintaining high reconstruction fidelity.

Woojin Cho, Junghwan Park, S. Sim et al. · 0 citations
Jul 2026

Few-Shot Open-Vocabulary Remote Sensing Segmentation via Textual Inversion

It is shown that a better name repairs part of the gap, while the remaining failures call for an address that the tested natural-language rephrasings do not provide, and the model improves over few-shot methods that instead inject visual prompts at inference.

Junhyuk Heo, Junghwan Park · 0 citations
Preprint Aug 2026

Summarize First, Download Later: Onboard VLMs for Bandwidth-Efficient Earth Observation

This work proposes a "Summarize First, Download Later" paradigm that exploits recent advances in onboard edge computing and Vision-Language Models (VLMs) and substantially reduces bandwidth consumption while accelerating time-to-insight for time-sensitive missions.

Junghwan Park, S. Sim, Woojin Cho et al. · 0 citations

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