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Jia-Jie He

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#artificial intelligence Preprint Sep 2026

Are LLMs Good Financial User Simulators? A Preliminary Study

Large language models (LLMs) are increasingly used as user simulators, but their ability to reproduce evolving individual financial decisions remains unclear. We present a preliminary study in a controlled paper-trading environment with 120 volunteers. Participants used non-redeemable virtual funds under real-time mark...

Jia-Jie He, Jiang-Yuan Hong, Dong-Ling Ni et al. · 0 citations
Jul 2026

Secure-by-Disguise: A Systematic Evaluation of Image Disguising for Confidential Medical Image Modeling

A systematic assessment of PET suitability for confidential medical AI applications showed that image disguising performance varies significantly between tasks; while methods preserved utility for medical image classification, they caused substantial degradation in dense semantic segmentation.

Jason Rojas, Jia-Jie He, Yash Patel et al. · 0 citations
Preprint Aug 2026

TIEM: Temporal Integration of Hypergraph Evidence and Skill Memory for Event-Driven Financial Forecasting

TIEM, a timestamp-gated framework with three coordinated components: an Event-Evidence Hypergraph (EEH) for timestamp-filtered multi-tier retrieval; a Case-based Skill Memory (CSM) for source-tagged temporal skills; and Heterogeneous Evidence-Experience Fusion Reasoning (HEFR) for evidence-experience fusion and predict...

Wen-Jin Liu, Shengjie Pang, Chen-Xi Wang et al. · 1 citation

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