Every idea extracted from recent arXiv mathematics papers — verified and unverified. Click an idea to open its full card; badges show the empirical verdict.
Attach a cheap risk score to each neural-network prediction and skip an expensive verifier, ensemble, diffusion refinement, retrieval call, or human review when the score is below a calibrated threshold. Independently audit a random subset of skipped examples using the expensive ground-truth procedure, and select the largest skip threshold whose exact confidence bound keeps the violation rate below a target budget.
Use the paper's finite-width O(n^{-1/2}) Gaussian-process approximation bound as a width-budgeting rule rather than choosing every hidden dimension uniformly. Estimate an architecture-specific constant for each layer or attention contraction, then allocate width according to the smallest dimension satisfying its allowed distributional error. This should produce narrower models at comparable GP-like behavior, or permit the same parameter budget to be concentrated in the layers where finite-width…
Use the paper's MBM-GP construction to predict input-dependent big-M constants for ReLU disjunctions during neural-network verification. Exact activation-bound optimization is performed only at a small subset of input points, while a Gaussian-process upper confidence bound supplies conservative bounds elsewhere, reducing verifier preprocessing and potentially tightening the MILP compared with one global worst-case constant.
Replace the usual inverse-eigenvalue weights in a low-rank feature-covariance preconditioner by inverse weights with an estimated isotropic floor subtracted. Retain only the top r eigendirections and require every corrected denominator to exceed a margin, preventing the shifted inverse from approaching a pole. This should undo systematic under-updating of predictive directions when many weak feature directions inflate the empirical covariance.
Add an online low-rank reconstruction layer before a recommender or ranking MLP. It estimates a latent action-feature subspace from masked candidate vectors, freezes that subspace for an epoch, reconstructs each partially observed candidate in the latent coordinates, and feeds only those coordinates to the predictor. The method is most promising when the ambient candidate dimension d is large but the effective rank m is small and missingness is not too severe.
Replace a neural layer's dense parameters by a real parameter tensor and a binary activity mask, then update the mask using importance scores measured across multiple perturbation intervals. Gates that repeatedly occur in non-dominated accuracy–cost configurations receive larger scores and are more likely to be retained or activated, avoiding uniformly random sparse rewiring.