modeluser8888/MIRA-DEMO

Open-Source Demonstration Reproduction of MIRA

This repository provides an open-source demonstration reproduction of
MIRA: Medical Time Series Foundation Model for Real-World Health Data
(arXiv: https://arxiv.org/abs/2506.07584).

The goal of this demo is to offer a fully accessible and reproducible version of the MIRA framework, trained exclusively on publicly available time-series datasets, without using any proprietary or sensitive clinical data.
It is designed to showcase the core ideas of MIRA rather than replicate the full-scale training described in the original paper.

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Overview

This demonstration model reproduces the key architectural components of MIRA:

• Continuous-Time Rotary Positional Encoding (CT-RoPE)
  Enables geometric time encoding for irregularly sampled signals. The CT-RoPE temporal unit is set to 0.1.

• Frequency-Specialized Mixture-of-Experts (MoE)
  Allows experts to specialize on low- vs. high-frequency clinical patterns.

• Neural ODE–Based Continuous Dynamics Modeling
  Captures long-range physiological trajectories with continuous-time formulations.

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Notes

• This model is a demonstration reproduction, not the full-scale MIRA model.
• Performance will differ from the original paper due to dataset differences.

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