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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

MedNotes is a multi-agent synthetic data generation pipeline that converts longitudinal structured EHR into source-grounded clinical note representations under explicit quality control and improves downstream CPT prediction and paragraph-level section prediction when combined with limited real data.

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

Under a softmax retrieval abstraction, a finite-sample upper bound is derived showing that maintaining a fixed accuracy target above base rate requires the evidence margin to scale as $\Omega(\sqrt{\log N})$, where N denotes the effective distractor count rather than necessarily the raw context length.

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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