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Han-Xu Yan

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Preprint Oct 2026

Prune First, Decide Fast: Scalable Semantic Query Processing with JEVDB

Semantic database systems extend SQL with foundation-model inference over unstructured data, but current engines rely heavily on autoregressive LLMs for discrete relational decisions, creating high latency and monetary cost. We present JEVDB, a scalable semantic database system that uses fast, typed decision models for...

Zheng-Le Wang, Han-Xu Yan, Fuheng Zhao et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Fail Loudly: An Auditable Runtime for Agentic Data Analysis

Large language models (LLMs) have enabled data-science agents to automate multi-step analyses over heterogeneous files. However, incorrect choices regarding data sources, scope, or statistical definitions often lead to silent errors: computations execute successfully but produce plausible yet incorrect outputs that fai...

Han-Xu Yan, Lang-Xuan Deng, Zheng-Le Wang et al. · 0 citations

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