Architecture ideas

Attention variants, state-space and recurrent cells, normalization and token-mixing schemes — each tested against the standard block it replaces.

✗ Failed on benchmark 2026

Differentially Passive Neural Blocks

Replace selected residual, recurrent, or state-space blocks by modules whose input-output Jacobians satisfy an IODP inequality throughout a prescribed activation domain. The constraint controls incremental amplification between two trajectories without requiring either trajectory to remain near one fixed equilibrium, so it should improve robustness to changing contexts and prevent exploding long-horizon sensitivities.

Useful8/10
Difficulty6/10
Novelty6/10
Paper: Decentralized and Equilibrium-Set-Oriented Stability Analysis and Control for Power Systems arXiv:2609.00497
△ Mechanism confirmed, baseline not beaten 2026

Partial-ReNoise Neural Architecture Mutation

Replace independent architecture generation with a diffusion mutation kernel that starts from a known valid neural architecture, re-noises it for only a fraction of the diffusion horizon, and denoises it conditionally toward a new architecture. The resulting candidates should remain closer to the parent and retain validity at low mutation strength, while larger re-noising fractions should produce greater novelty and access to distinct architectural basins.

Useful8/10
Difficulty6/10
Novelty6/10
Paper: From Generation to Discovery: Diffusion Mutation Kernels for Circuit and Physical Design arXiv:2608.27649
✓✓ Beats tuned baseline 2026

Resolution-normalized Hilbert dictionary

Build a shallow neural model whose input at every discretization level is embedded into a common Hilbert space with uniformly bounded norm, and constrain every neuron parameter in the corresponding dual norm. The statistical complexity then depends on the Hilbert norm bound rather than the number of retained coordinates, allowing one model design to operate across increasingly fine measurements.

Useful8/10
Difficulty4/10
Novelty7/10
Paper: Resolution-Consistent Greedy Neural Approximation on Infinite-Dimensional Spaces arXiv:2608.20812
△ Mechanism confirmed, baseline not beaten 2026

Critical-Region LP Policy Layer

Replace black-box differentiation through an embedded LP decision with an analytic Jacobian computed from the LP’s active basis. A neural policy emits LP coefficients or right-hand sides; the LP returns the decision, while the backward pass uses the basis inverse and dual sensitivity, avoiding solver unrolling and finite-difference noise.

Useful8/10
Difficulty5/10
Novelty5/10
Paper: Simulation-Optimization of Systems of Optimizers: Exploiting the Inner Optimization's Geometry arXiv:2608.18129
△ Mechanism confirmed, baseline not beaten 2026

Differentiable Asymmetric Admissibility Layer

Replace hard clipping or post-hoc asymmetric saturation with a dynamic output state that remains inside a prescribed asymmetric interval. A neural network emits a command uc, while the realized output u evolves through the APIR vector field, producing bounded actions, temporal smoothing, and gradients that remain available in the interior.

Useful8/10
Difficulty4/10
Novelty7/10
Paper: Admissibility-Preserving Control for Strict-Feedback Nonlinear Systems with Asymmetric Actuator Constraints arXiv:2608.15375
✗ Failed on benchmark 2026

Ghost-State Adaptive Recurrent Cell

Replace a single recurrent state update with fast feature relaxation, activity evolution, and a slow adaptive state that modulates the activity vector field. Tune the activity subsystem near a controllable saddle-node so that it retains a useful transient regime for a predictable number of steps, enabling delayed switching and long-horizon memory without requiring a large hidden state.

Useful8/10
Difficulty6/10
Novelty7/10
Paper: Ghost Dynamics in Receptor Signalling Networks: A Fast--Slow Adaptive Extension of Competitive Cancer Inhibition Models arXiv:2608.15300
△ Mechanism confirmed, baseline not beaten 2026

LP-Embedded Input-Convex MLP

Replace a standard ReLU surrogate with an input convex neural network whose hidden-to-hidden weights are constrained to be nonnegative. The network remains piecewise linear and expressive, but its convexity allows downstream minimization to use continuous ReLU epigraph constraints instead of binary activation variables, potentially eliminating the integrality bottleneck of neural optimization.

Useful8/10
Difficulty5/10
Novelty5/10
Paper: Input convex neural networks as surrogates in mathematical optimisation arXiv:2608.09707
△ Mechanism confirmed, baseline not beaten 2026

MCIS Safety Shield for Neural Controllers

Compute an inner approximation of the states from which a neural controller can keep the plant inside a prescribed safe domain indefinitely, then use the resulting regulation map as a safety shield around the network. At each state, the network proposes an action, but the shield projects or replaces it with an action certified to remain in the invariant set.

Useful8/10
Difficulty6/10
Novelty6/10
Paper: Computing the Maximal Controlled Invariant Set for Neural Network Control Systems arXiv:2608.07908
✓✓ Beats tuned baseline 2026

Power-Balanced Modular Neural Block

Represent each neural module as a Hamiltonian storage system and connect modules through a state-dependent skew or Dirac interconnection instead of arbitrary residual additions. The coupling may change with the hidden state, but its internal power contribution cancels exactly, so total stored energy is controlled only by external inputs and explicitly added dissipation.

Useful8/10
Difficulty5/10
Novelty5/10
Paper: Port-Hamiltonian modelling of coupled rigid/flexible multibody systems arXiv:2608.05143
△ Mechanism confirmed, baseline not beaten 2026

Sparse-Graph Tensorized Linear Layer

Replace a dense neural-network weight tensor with a graph tensor network whose physical modes and internal edge ranks are specified by a sparse rank-adjacency matrix. Unlike tensor-train or hierarchical Tucker layers, the graph can contain selected cycles and skip connections between tensor modes, allowing the factorization topology to match correlations in the weight tensor. Fit the layer with GTN-SVD at a prescribed tolerance and compare accuracy, parameter count, and tensor-contraction…

Useful8/10
Difficulty6/10
Novelty5/10
Paper: Computing with traceable tensor networks arXiv:2608.02849
✓✓ Beats tuned baseline 2026

Corrector-Enriched Two-Scale Network

Replace a single neural representation of a rapidly oscillatory PDE solution by a macroscopic network plus an explicitly oscillatory corrector network. Feed the network both the slow coordinate $x$ and fast coordinate $y=x/\varepsilon$, and train the resulting composite field in a variational energy objective. This targets the paper's scale-robust approximation bound rather than forcing the optimizer and finite sample set to discover oscillations of wavelength $\varepsilon$.

Useful8/10
Difficulty5/10
Novelty6/10
Paper: Non-Asymptotic Variational Learning for Monotone Nonlinear Multiscale Elliptic Equations: Scale-Robust Primal-Dual Bounds and Strong-Form Statistical Ill-Conditioning arXiv:2607.15702
✗ Mechanism failed 2026

Permutation-family residual network

Replace direct learning of a highly cancelling signed observable with a quotient-space model over symmetry orbits of inputs. Predict a physically constrained baseline for each family and use an LSTM or set/graph encoder only for the residual many-body correlation, then aggregate family predictions with known signed weights instead of forming a noisy sample-level ratio.

Useful8/10
Difficulty5/10
Novelty7/10
Paper: Learning the Fermion sign structure in path-integral Monte Carlo arXiv:2607.15060
✗ Failed on benchmark 2026

Balanced State-Order Compression

Compress each hidden layer by retaining directions that are simultaneously reachable from the observed input distribution and observable at the network output. Unlike PCA or SVD, the retained subspace is weighted by downstream task sensitivity, so high-variance but output-irrelevant directions can be removed while low-variance predictive directions are preserved.

Useful8/10
Difficulty5/10
Novelty7/10
Paper: Empirical Minimal-Realisation Compression of Deep Neural Networks via Controllability-Observability Tests arXiv:2607.05457
△ Mechanism confirmed, baseline not beaten 2026

Accumulator-Carrying Picard ResNet

Build a residual module whose state explicitly contains both a persistent context representation and an accumulator. Each residual branch computes one learned correction and adds it to the accumulator, instead of forcing every layer to represent the complete output from scratch. This provides a concrete solver-like architecture for high-dimensional regression and iterative latent prediction.

Useful7/10
Difficulty4/10
Novelty5/10
Paper: Residual neural networks overcome the curse of dimensionality for semilinear heat equations arXiv:2609.03626
△ Mechanism confirmed, baseline not beaten 2026

Degree-Calibrated Stable Residual Flow

Construct a continuous-depth or recurrent residual block with a prescribed polynomial Lyapunov decay near its equilibrium. The architecture combines a fixed radial stabilizer with a learned component that is constrained to have zero radial projection, allowing slow algebraic transients and long memory while preventing asymptotic hidden-state growth.

Useful7/10
Difficulty6/10
Novelty8/10
Paper: On a Gradation for Asymptotic Stability arXiv:2609.03120
△ Mechanism confirmed, baseline not beaten 2026

Regularity-Matched Random Fourier Layer

Replace the usual isotropic Gaussian random Fourier features with a frequency distribution matched to the expected spectral regularity of the target function. For coordinate fields, operator-learning maps, or PDE solution surrogates, this should place more features where the target Fourier energy lies and improve approximation at the same feature count. Stabilize the resulting feature matrix with whitening or ridge regression because spectral accuracy can create severe ill-conditioning.

Useful7/10
Difficulty4/10
Novelty5/10
Paper: Spectral Convergence of Random Feature Method in Multiple Dimensions arXiv:2609.03401
✗ Mechanism failed 2026

Orbit-Consistent Equivariant Distillation

Constrain a student policy to transform its action in the same way that the input state is transformed, while constraining its value estimate to remain unchanged. During distillation, augment every teacher-student pair with several symmetry-transformed copies and penalize disagreement after transforming the student action back to the original frame.

Useful7/10
Difficulty5/10
Novelty4/10
Paper: SymVD: Symmetric Vision Language Action Distillation for Robot Manipulation arXiv:2608.29828
✗ Mechanism failed 2026

Sobolev-Calibrated Frozen Sigmoid Features

Replace a trainable shallow MLP hidden layer by a frozen bank of smooth sigmoid ridge functions and train only a linear output head. Choose the feature count and parameter sampling regime using the theorem's explicit dependence on input dimension d, target regularity k, evaluation norm m, and confidence delta. The construction is especially appropriate for smooth regression, scientific surrogate models, and PINNs, where derivatives of the network output are part of the loss.

Useful7/10
Difficulty3/10
Novelty5/10
Paper: Optimal Sobolev Approximation by Deterministic and Random Shallow Sigmoidal Networks arXiv:2608.19797
✗ Failed on benchmark 2026

Hyperplane-Gated Piecewise Neural Dynamics

Replace a single smooth neural vector field with a finite collection of smooth subnetworks selected by learned affine hyperplanes. The architecture exposes switching geometry directly, allowing it to represent friction-like or threshold dynamics without approximating discontinuities using excessively steep activations.

Useful7/10
Difficulty5/10
Novelty6/10
Paper: Learning piecewise-smooth dynamical systems arXiv:2608.19785
✗ Failed on benchmark 2026

Kac-rotated fast projection

Replace a dense Haar or Gaussian random projection with a streamed product of random two-coordinate rotations followed by coordinate subsampling. The transform is exactly orthogonal before subsampling, requires only a list of rotation triples, and the paper's pseudo-mixing result predicts that degree-two statistics relevant to norm preservation and Johnson–Lindenstrauss embeddings become Haar-like after only O(n polylog(n)) rotations.

Useful7/10
Difficulty4/10
Novelty5/10
Paper: On the Pseudo-Mixing of Kac's Walk arXiv:2608.17374
✗ Mechanism failed 2026

Gaussian-mixture kinetic neural solver

Make a neural network predict a positive Gaussian-mixture representation of the distribution function rather than independent values on a momentum grid. Use the mixture parameters inside a differentiable Boltzmann collision operator, so training directly enforces the interaction mechanism and exposes the relaxation spectrum responsible for ballistic-to-hydrodynamic crossover.

Useful7/10
Difficulty6/10
Novelty7/10
Paper: Linear response across interaction regimes in two-dimensional ferromagnets arXiv:2608.14477
✓✓ Beats tuned baseline 2026

Reciprocal-Lattice Gauge-Covariant Bloch Network

Build a Bloch-conditioned neural model whose periodic-factor representation transforms covariantly when the supplied Bloch wavenumber is shifted by a reciprocal lattice vector. Either canonicalize q to the first Brillouin zone or augment training with mathematically paired examples whose outputs differ by the exact phase gauge. This prevents the network from learning inconsistent predictions for physically identical Bloch modes.

Useful7/10
Difficulty4/10
Novelty8/10
Paper: Full-field and Bloch-periodic-factor discretizations: Accuracy and phantom modes arXiv:2608.14348
✓✓ Beats tuned baseline 2026

Tiny Local Recurrence with Adaptive Computation

Replace a stack of independently parameterized residual or MLP blocks with a small latent grid or vector repeatedly updated by one shared transition rule. Let the number of updates depend on the current latent state, so easy examples terminate early while hard examples receive more computation, potentially improving parameter efficiency and extrapolation.

Useful7/10
Difficulty5/10
Novelty6/10
Paper: Emergent Models: Intelligence from Tiny Substrates arXiv:2608.14019
✗ Failed on benchmark 2026

Sharp JL Hidden-State Bottleneck

Insert a linear Johnson–Lindenstrauss bottleneck around a set of jointly processed representations, choosing its width from the sharp finite-set dimension bound rather than from the model's nominal hidden size. The projection should preserve pairwise distances between tokens, patches, or retrieved items, allowing a downstream attention or MLP block to operate at lower width while retaining the geometry relevant to similarity computations.

Useful7/10
Difficulty5/10
Novelty5/10
Paper: The Sharp Dimension Bound in the Johnson--Lindenstrauss Lemma arXiv:2608.13782