arXiv AI By Emma Andrews, Konstantinos Kontras, Keane Ong, Maarten De Vos, Gianmarco Mengaldo

ATEMPO: Amortized Transfer Entropy Model Per-lag Over-Time

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ATEMPO is a diffusion-based transfer entropy estimator that amortizes over lags and time, allowing a single score network to estimate the full TE surface without separate fits for each source and conditioning depth. By sampling depths during training and conditioning on temporal position, ATEMPO recovers when information arrives and achieves high lag-detection accuracy on synthetic and real datasets. The method improves downstream forecasting and brain-computer interface performance, reducing MSE on WEATHER-5K and increasing mean R² by 4.1% compared to competing baselines.

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