[2507.06996] Generating Multi-Table Time Series EHR from Latent Space with Minimal Preprocessing

Computer Science > Machine Learning arXiv:2507.06996 (cs) [Submitted on 9 Jul 2025 (v1), last revised 2 Mar 2026 (this version, v2)] Title:Generating Multi-Table Time Series EHR from Latent Space with Minimal Preprocessing Authors:Eunbyeol Cho, Jiyoun Kim, Minjae Lee, Sungjin Park, Edward Choi View a PDF of the paper titled Generating Multi-Table Time Series EHR from Latent Space with Minimal Preprocessing, by Eunbyeol Cho and 4 other authors View PDF HTML (experimental) Abstract:Electronic Health Records (EHR) are time-series relational databases that record patient interactions and medical events over time, serving as a critical resource for healthcare research and applications. However, privacy concerns and regulatory restrictions limit the sharing and utilization of such sensitive data, necessitating the generation of synthetic EHR datasets. Unlike previous EHR synthesis methods, which typically generate medical records consisting of expert-chosen features (e.g. a few vital signs or structured codes only), we introduce RawMed, the first framework to synthesize multi-table, time-series EHR data that closely resembles raw EHRs. Using text-based representation and compression techniques, RawMed captures complex structures and temporal dynamics with minimal preprocessing. We also propose a new evaluation framework for multi-table time-series synthetic EHRs, assessing distributional similarity, inter-table relationships, temporal dynamics, and privacy. Validated on two open...