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Ruben Solozabal

3 accepted papers

2026

WaveSSM: Multiscale State-Space Models for Non-stationary Signal Attention

ICML 2026poster

State-space models (SSMs) have emerged as a powerful foundation for long-range sequence modeling, with the HiPPO framework showing that continuous-time projection operators can be used to derive stable, memory-efficient dynamical systems that encode the past history of the input signal. However, exi…

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2025

Uncovering the Spectral Bias in Diagonal State Space Models

NeurIPS 2025poster

Current methods for initializing state space models (SSMs) parameters mainly rely on the \textit{HiPPO framework}, which is based on an online approximation of orthogonal polynomials. Recently, diagonal alternatives have shown to reach a similar level of performance while being significantly more ef…

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2024

Robustly Train Normalizing Flows via KL Divergence Regularization

AAAI 2024technical

In this paper, we find that the training of Normalizing Flows (NFs) are easily affected by the outliers and a small number (or high dimensionality) of training samples. To solve this problem, we propose a Kullback–Leibler (KL) divergence regularization on the Jacobian matrix of NFs. We prove that su…

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