Papers › Long Range Propagation on Continuous-Time Dynamic Graphs

Long Range Propagation on Continuous-Time Dynamic Graphs

4 Jun 2024arXiv:2406.02740archive 2025-07-28

Alessio Gravina, Giulio Lovisotto, Claudio Gallicchio, Davide Bacciu, Claas Grohnfeldt

Learning Continuous-Time Dynamic Graphs (C-TDGs) requires accurately modeling spatio-temporal information on streams of irregularly sampled events. While many methods have been proposed recently, we find that most message passing-, recurrent- or self-attention-based methods perform poorly on long-range tasks. These tasks require correlating information that occurred "far" away from the current event, either spatially (higher-order node information) or along the time dimension (events occurred in the past). To address long-range dependencies, we introduce Continuous-Time Graph Anti-Symmetric Network (CTAN). Grounded within the ordinary differential equations framework, our method is designed for efficient propagation of information. In this paper, we show how CTAN's (i) long-range modeling capabilities are substantiated by theoretical findings and how (ii) its empirical performance on synthetic long-range benchmarks and real-world benchmarks is superior to other methods. Our results motivate CTAN's ability to propagate long-range information in C-TDGs as well as the inclusion of long-range tasks as part of temporal graph models evaluation.

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GenericModel gravins/non-dissipative-propagation-CTDGs/models/ctdg_models.py official repository ran BSD-3-Clause (permissive) · e95a36ecfd64604b · report
aggregate_res gravins/non-dissipative-propagation-ctdgs/main_tgb_ctan.py official repository ran · our draft was wrong BSD-3-Clause (permissive) · c21c2f155065170c · report
compute_row gravins/non-dissipative-propagation-ctdgs/main_tgb_ctan.py official repository ran · our draft was wrong BSD-3-Clause (permissive) · 3506c74436204d6e · report
CTAN gravins/non-dissipative-propagation-CTDGs/models/ctdg_models.py official repository unverified BSD-3-Clause (permissive) · b1d782a58a37a3a7 · report

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