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Ji Soo Lee

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#natural language process... Preprint Sep 2026

WearableQA: A Benchmark for Health Reasoning over Real-World Wearable Data

WearableQA, a benchmark comprising 4,084 10-option multiple-choice questions constructed from the wearable time series, blood biomarkers, and demographics of 200 real users, provides a realistic and diagnostic benchmark for evaluating LLM reasoning over real-world wearable data.

Ji Soo Lee, Xi-Lun Chen, Pierce Chuang et al. · 0 citations
Preprint Aug 2026

Reason in the Words You Speak: Idiolectal Paraphrasing Off-Policy Traces for Reasoning Distillation in VideoLLMs

Echo-GRPO is proposed, a framework that lets the model reason in the words it speaks, and idiolectal paraphrasing is a plug-in module that consistently improves both RL and supervised fine-tuning frameworks for reasoning distillation, demonstrating that policy-aligned supervision extends beyond GRPO.

Ji Soo Lee, Jinyoung Park, Seohyun Lee et al. · 0 citations

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