This paper introduces a temporal correlation volatility metric, shows that graph and transformer forecasters fail when it is high, and proposes a GNN layer with path-based and static/dynamic separated propagation that reports large gains.
In: Proceedings of the 23rd ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, Halifax, NS, Canada
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When GNNs Fail: Quantifying and Overcoming Temporal Correlation Volatility in Time Series
This paper introduces a temporal correlation volatility metric, shows that graph and transformer forecasters fail when it is high, and proposes a GNN layer with path-based and static/dynamic separated propagation that reports large gains.