Author

Andrea Ceni

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Preprint Aug 2026

Free-Probability Kernels for Zero-Rollout Hyperparameter Selection in Reservoir Computing

This work introduces a deterministic, pilot-informed selector for leaky linear reservoirs followed by coordinate-wise nonlinear features and positions free-probability kernels as deterministic surrogates for selecting reservoir operating regimes when validation rollouts are scarce.

Sara Malacarne, Andrea Ceni, Claudio Gallicchio · 0 citations

#artificial intelligence Preprint Aug 2026

Memristive-Friendly Hadamard Reservoir Computing: Structured, Multiplier-Free Recurrences at Scale

This paper replaces the dense matrix with a structured orthogonal operator, built from sign diagonals, a permutation, and a fast Walsh-Hadamard transform, and shows that exact orthogonality yields an echo state condition that is tight in the recurrent scaling, and a noise response that is predictable at design time.

Andrea Ceni, Gianluca Milano, Carlo Ricciardi et al. · 0 citations