HAN-Mamba: Hierarchical Selective State Space Networks for Multi-Scale Financial Volatility Forecasting
HAN-Mamba is a hybrid that summarizes each stream through a recurrent state whose input-dependent gating matches two structural properties of volatility: persistent but decaying memory and abrupt regime shifts, and improves mean RMSPE over HAN-T over time-aware five-fold cross-validation.
M. Deaconu, Ioan-Daniel Pop
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