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HeartLang

Peking University (PKUDigitalHealth)

12-lead ECG

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ECG

General Purpose / Multi-task

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General / Foundation

Multi-label classification

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Classification

Transformer

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Transformer

PyTorch

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PyTorch

MIT

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Permissive

Treats ECGs as a language: a QRS-Tokenizer converts raw waveforms into discrete heartbeat 'words' from a learned 8,192-entry vocabulary, and a spatio-temporal transformer (ST-ECGFormer) is pretrained via masked-sentence modeling over these tokens. Evaluated for robust, competitive performance across six public ECG datasets and published at ICLR 2025. Developed by Peking University's digital health group, pretrained on MIMIC-IV-ECG.

memory Specifications

category

Architecture

Transformer

QRS-Tokenizer (heartbeat vector-quantization codebook, 8192 entries) feeding an ST-ECGFormer spatio-temporal transformer encoder; masked ECG-sentence pretraining

code

Framework

PyTorch

calendar_month

Added to catalog

2026-07-10

gavel License

MIT

check_small Open source check_small Commercial use OK check_small Modifications allowed Attribution required No share-alike requirement

License for model weights only. Associated code may be licensed seperately, check code source for specific terms.

description Publication

database Training & evaluation data

public 161,352 subjects · USA

800,035 12-lead ECG-report pairs from 161,352 subjects at Beth Israel Deaconess Medical Center.

science Capabilities & performance

Multi-label classification

General Purpose / Multi-task