SPDM is a geometry-aware state-space model that projects covariance matrices onto the SPD manifold tangent space and uses geometric gating to modulate SSM parameters for improved multivariate time series forecasting.
Time series forecasting via direct per-step probability distribution modeling URL:https://arxiv.org/abs/2511
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SPDM: Geometry-Modulated State Space Modeling with Manifold Constraints for Time Series Forecasting
SPDM is a geometry-aware state-space model that projects covariance matrices onto the SPD manifold tangent space and uses geometric gating to modulate SSM parameters for improved multivariate time series forecasting.