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Frank Nie

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#artificial intelligence Preprint Sep 2026

From Collaboration to Capability: Internalizing Routed LLM Experts into Compact Reasoners

This work studies whether learning from both the controller's decisions and the experts'reasoning and code improves its generation after expert removal, and introduces Rivet for collaboration internalization, supporting the effectiveness of training on the content and structure of verified collaborations.

Frank Nie, Shu-Yao Wang, Bowen Liu · 0 citations
Jul 2026

A Cost-Effective Multimodal LLM Reasoning Framework for Question Answering over Irregular Clinical Time Series

ClinPRISM, a cost-effective multimodal LLM reasoning framework for question answering over ICTS data, is proposed and achieves state-of-the-art performance on the held-out evaluation benchmark while using only 16 time-series tokens and achieving an average inference latency of 0.15 seconds per question.

Frank Nie, Ethan B. Liu, Yuan Zhu et al. · 1 citation
Jul 2026

ClinLens: Towards Long-Horizon Coding Agents for Longitudinal Multimodal Clinical Data Science

CLINLENS is introduced, a benchmark of 200 executable tasks over five linked MIMIC resources spanning structured electronic health records, notes, electrocardiograms, chest radiographs, and echocardiograms, which exposes a substantial gap between runnable submissions and correct clinical analyses.

Yuan Zhu, Ethan B. Liu, Frank Nie et al. · 0 citations
Jul 2026

CLIR-Bench: Benchmarking Multimodal Question Answering over Irregular Clinical Time Series

CLIR-Bench is introduced, a benchmark for irregular clinical time series QA constructed from de-identified ICU records through a principled four-stage pipeline, enabling evaluation of both answer accuracy and evidence use.

Frank Nie, Ethan B. Liu, Yuan Zhu et al. · 2 citations

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