Author

Ziwei Shan

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#artificial intelligence Preprint Sep 2026

From Judgment Quality to Downstream Utility: Rethinking LLM-as-a-Judge for Open-Ended Tasks

LLM-as-a-Judge is increasingly used to evaluate policy responses on open-ended tasks that lack ground-truth answers. Existing work often directly converts the resulting judgments into reward signals for policy training, paying limited attention to intrinsic judgment quality and largely restricting the use of Judges to...

Zheng Zhang, Lu Li, Xin-Yue Tan et al. · 0 citations

#artificial intelligence May 2026

KairosAgent: Agentic Time Series Forecasting with Fused Semantic Reasoning

KairosAgent, a novel agentic framework for multimodal time series forecasting, including an LLM-based reasoner and a TSFM-based forecaster, unifies textual reasoning and numerical forecasting by dynamically invoking analytical tools to enhance the numerical understanding and semantic reasoning capabilities of LLMs.

Kun Feng, Ziwei Shan, Yu-Chen Fang et al. · arXiv.org · 5 citations · ⚡1