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Author

Nina Fatehi

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#machine learning Preprint Aug 2026

A Multi-Agent Pipeline for Source-Grounded Synthetic Note Generation from Longitudinal Structured EHR

Structured EHR is abundant but sparse, coded, and difficult to use directly for note-centric clinical modeling. We present MedNotes, a multi-agent synthetic data generation pipeline that converts longitudinal structured EHR into source-grounded clinical note representations under explicit quality control. MedNotes trea...

Nina Fatehi, Reihaneh Hassanzadeh, Meysam Ghaffari et al. · 0 citations
#artificial intelligence Preprint Aug 2026

Context Poisoning as Extreme-Value Attention Interference in Long-Context Language Models

Large language models can process increasingly long prompts, yet their ability to locate and use decisive evidence may degrade as irrelevant or confusable context is added. We formulate this phenomenon, which we call context poisoning, as extreme-value interference in attention: the decisive-evidence score is upper-bou...

Meysam Ghaffari, Nina Fatehi, Bhaskar Sen et al. · 0 citations
Review Aug 2026

Structured Evidence Routing for Incident Risk Prediction from Multimodal Longitudinal EHRs

This work proposes structured evidence routing, a router-predictor-reviewer workflow that separates full-record access from disease-specific assessment, and suggests that routing, laboratory evidence, task guidance, and review each contribute to performance.

Animesh Agarwal, Meysam Ghaffari, Nina Fatehi et al. · 0 citations

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