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Image Credit: Arxiv

CTPD: Cross-Modal Temporal Pattern Discovery for Enhanced Multimodal Electronic Health Records Analysis

  • Integrating multimodal Electronic Health Records (EHR) data has potential for predicting clinical outcomes.
  • Previous work focused on temporal interactions within samples and fusion of information, overlooking critical temporal patterns across patients.
  • Identifying temporal patterns like abnormal vital signs and corresponding textual descriptions is crucial.
  • A Cross-Modal Temporal Pattern Discovery (CTPD) framework is introduced to extract cross-modal temporal patterns efficiently.
  • CTPD uses shared initial temporal pattern representations and slot attention to generate temporal semantic embeddings.
  • A contrastive-based TPNCE loss is introduced for cross-modal alignment in learned patterns, along with two reconstruction losses.
  • Evaluations on 48-hour in-hospital mortality and 24-hour phenotype classification tasks using the MIMIC-III database highlight the superiority of the method.

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