Math: Renormalization

Machine-learning ideas tagged Renormalization in the Math taxonomy of the Math2NN corpus.

✓✓ Beats tuned baseline 2026

Time-Shell Long-Horizon Decoder

Replace dense pairwise interactions between all forecast horizons with nested time-shell summaries. For sorted horizons, the readout at shell j receives a cumulative embedding of all coefficients or queries assigned to later horizons, reproducing the paper's dependence on products such as \(\Pi_j=\prod_{l>j}e^{\alpha_l}=e^{\sum_{l>j}\alpha_l}\). This gives an \(O(Kd)\) multi-horizon interaction instead of an \(O(K^2d)\) temporal attention block and should work best for weak-memory…

Useful7/10
Difficulty5/10
Novelty8/10
Paper: Dynamical correlation functions of extensive charges after global quantum quenches arXiv:2607.19208
Unverified 2026

Sparse Levy Skip Network

Construct a residual neural network or graph message-passing layer whose skip edges are sampled with probability proportional to their distance as $|i-j|^{-(1+\sigma)}$, while retaining a small local backbone. The paper's mechanism predicts that coarse-grained propagation is governed by the long-range kinetic operator and is therefore asymptotically insensitive to the particular Bernoulli graph realization, yielding controllable superdiffusive information transport without dense all-to-all…

Useful6/10
Difficulty5/10
Novelty7/10
Paper: Universality of superdiffusion in simple random graphs arXiv:2608.23207
Unverified 2026

RG-monotone representation compression

Interpret successive neural representations as an RG flow and constrain coarse-graining layers to remove unstable or redundant information monotonically. The paper reports monotonic decrease of an effective central charge along measurement-induced RG flows; a neural analogue can use a measurable information-complexity proxy and reject compression steps that increase it while preserving task-relevant information.

Useful5/10
Difficulty6/10
Novelty6/10
Paper: Learning Potts Models and $Z_3$ Toric Codes: Higher and Ordinary Nishimori Criticality arXiv:2608.20268