CASE-NET: Deep Spatio-Temporal Representation Learning via Causal Attention and Channel Recalibration for Multivariate Time Series Classification
This work addresses representation distortion and noise sensitivity in multivariate time series classification, which arise from non-causal modeling and channel independence assumptions. To this end, the authors propose a Structured Manifold Preconditioning Network that jointly integrates causal self-attention, causal convolutions, and an adaptive channel recalibration mechanism—enabling the first unified modeling of temporal causal structure and channel-wise information bottlenecks. This approach effectively mitigates temporal confounding under non-stationary dynamics and suppresses noise in latent representations. The method achieves new state-of-the-art performance across four tasks spanning six heterogeneous domains, attaining 98.6% accuracy on the AWR dataset and demonstrating exceptional robustness in non-stationary scenarios.