Architecture ideas

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

Unverified 2026

Dyck-Polytope Sparse Routing

Replace independent top-k expert or attention-edge selection with a gate vector constrained by hierarchical path budgets modeled on the paper's extended-Dyck-path polytope. Ordinary interactions receive continuous nonnegative capacities, while a designated class of cross-group interactions receives binary or clipped-to-one gates, producing structured sparsity and preventing many correlated paths from consuming the same routing budget.

Useful5/10
Difficulty6/10
Novelty7/10
Paper: FFLV bases for covariant representations of $\mathfrak{gl}(m|n)$ arXiv:2607.11133
Unverified 2026

Spectrally Balanced Subdivision Backbone

Construct a sparse message-passing graph from a tree backbone by subdividing every backbone edge and attaching leaves so that 2d_T1(x_i)+f_i is constant across backbone vertices. Use this graph as a fixed communication skeleton, with propagation weights calibrated by the predicted spectral radius. The same construction can be compressed into an effective backbone operator by eliminating subdivision and leaf nodes.

Useful5/10
Difficulty5/10
Novelty6/10
Paper: Tight lower bound for the spectral radius of connected graphs with given matching number arXiv:2607.11061
Unverified 2026

Prime-Gated Maximal-Length Binary Reservoir

Replace a learned recurrent transition with a sparse binary reservoir compiled from prime-count gates. Three permanently active control vertices implement copy and XNOR transitions, allowing the signal state to realize an affine feedback register over \(\mathbb F_2\) with period \(2^m-1\) using only \(O(m)\) edges and bounded in-degree. Train only an input projection and readout, or use straight-through estimators if end-to-end adaptation is required.

Useful5/10
Difficulty5/10
Novelty6/10
Paper: Pulse Graphs: Prime-Activated Boolean Dynamics on Directed Graphs arXiv:2607.10453
Unverified 2026

Ensemble-Averaged Sparse Graph Search

Replace a binary neural connectivity mask by independent Bernoulli edge probabilities and optimize a deterministic expected message-passing objective before discretization. The resulting module can search sparse GNN edges or expert-to-token routes without repeatedly sampling many discrete architectures during training.

Useful5/10
Difficulty5/10
Novelty5/10
Paper: Learning LDPC codes with quantized density evolution over relaxed protographs arXiv:2607.08484
Unverified 2026

Compact Abelian Graph Positional Codes

Replace one-hot node IDs or large positional encodings in a GNN with coordinates from a compact abelian Cayley graph. The coordinates preserve graph-shortest-path geometry exactly, while Fourier characters of cyclic factors provide smooth neural features with fewer channels.

Useful5/10
Difficulty7/10
Novelty7/10
Paper: Dimension and Order Bounds for Isometric Embeddings of Graphs into Abelian Cayley Graphs, and the Abelian Dividend arXiv:2607.07939
Unverified 2026

Masked Universal Host Layer

Represent many related sparse graph or attention patterns inside one fixed host connectivity pattern and activate each target instance with binary directional masks. The learned edge transformation and sparse-kernel layout are shared across instances, while the mask selects the target graph, enabling one compiled operator to process heterogeneous structures.

Useful5/10
Difficulty5/10
Novelty5/10
Paper: A universal emulator for planar Ising lattices arXiv:2607.05308
Unverified 2026

Matroid-rank interaction bottleneck

Construct a candidate feature for every edge pair or structured token pair, then retain a numerically independent subset under a feature-Jacobian matroid. The neural layer computes only the selected interactions, preserving directions that add new information rather than pruning solely by magnitude or attention score.

Useful5/10
Difficulty6/10
Novelty7/10
Paper: Analytic Spread via Linear Matroids arXiv:2607.07458
Unverified 2026

Monotone Resolvent Elimination Layer

Build an implicit layer from a piecewise-linear maximal monotone operator on visible variables z_* and auxiliary variables z_**, then eliminate the auxiliary block rather than exposing it in the network output. Compute the layer through a fixed point of the eliminated component of a nonexpansive resolvent, with damping when the auxiliary map is not strictly contractive.

Useful5/10
Difficulty6/10
Novelty6/10
Paper: Maximal monotonicity of piecewise polyhedral mappings arXiv:2607.07358
Unverified 2026

Random-label irregular sparse attention

Construct a sparse attention mask from a fixed regular candidate graph and one scalar random label per token, retaining edge $(u,v)$ when $x_u+x_v\geq\tau$. Unlike independent random pruning, this produces correlated neighborhoods and a controllable distribution of token degrees, potentially giving some tokens broad receptive fields while retaining a fixed sparse budget.

Useful5/10
Difficulty3/10
Novelty7/10
Paper: Irregular subgraph in a regular graph arXiv:2607.06465
Unverified 2026

Peel-and-pass polynomial latent dynamics

Replace step-by-step hidden-state storage in a latent ODE, state-space model, or world model with a polynomial trajectory represented independently on short time blocks. At the end of each block, pass the next hidden state by summing temporal coefficients, allowing training and inference to discard the completed block while retaining a mathematically exact block interface.

Useful5/10
Difficulty6/10
Novelty7/10
Paper: Sparse space-time spectral methods can time-step by peel and pass arXiv:2607.06449
Unverified 2026

Cyclic Non-Backtracking Mixer

Replace a dense token or channel mixing matrix by a fixed sparse directed graph whose states are ordered pairs of symbols and whose transitions advance through a cyclic phase. Each state has exactly two allowed successors, obtained by appending a symbol different from the previous two, producing a strongly connected, vertex-transitive sparse mixer with shared local dynamics. The prescribed phase structure prevents arbitrary short-cycle routing and can act as an anti-collapse inductive bias in…

Useful5/10
Difficulty5/10
Novelty7/10
Paper: Long Directed Cycles in Vertex-Transitive Digraphs arXiv:2607.05807
Unverified 2026

Pareto-Score Dynamic Sparse Masks

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.

Useful5/10
Difficulty5/10
Novelty4/10
Paper: A Large-Scale Sparse Multiobjective Optimization Algorithm Based on Optimal Performance Scores arXiv:2607.04765
Unverified 2026

Piecewise-Symmetric Tensor Layer

Replace an unconstrained order-k weight tensor with a sum of components that are symmetric only within selected contiguous index blocks. This preserves interactions between blocks while tying parameters under within-block permutations, providing a tunable middle ground between a fully dense tensor and a fully symmetric tensor.

Useful5/10
Difficulty5/10
Novelty7/10
Paper: Piecewise Symmetric Tensors arXiv:2607.04712
Unverified 2026

Subcritical Preferential Sparse Attention

Construct a sparse attention or message-passing mask by sampling edges with preferential weights (d_u+alpha)(d_v+alpha), while keeping the edge count below the predicted connectivity threshold. This creates hub-like local communication patterns but prevents one giant component from forcing dense information mixing, reducing attention cost and potentially mitigating oversmoothing.

Useful5/10
Difficulty5/10
Novelty7/10
Paper: Sharp Asymptotics for the Largest Component in the Subcritical Regime of Preferential Attachment Without Vertex Growth arXiv:2607.00731
Unverified 2026

GKP Log-Concave Lag Mixer

Generate temporal attention or convolution weights with the Graham–Knuth–Patashnik recurrence instead of learning every lag weight independently. For nonnegative recurrence parameters, the resulting lag sequence is strongly log-concave, so its normalized kernel is naturally unimodal and suppresses high-frequency sign-free oscillations without requiring a separate smoothness penalty. The six parameters can be learned per head, channel group, or layer, giving O(1) learned parameters for an…

Useful5/10
Difficulty3/10
Novelty6/10
Paper: Log-concavity and log-convexity in the theory of the Graham--Knuth--Patashnik recurrences arXiv:2607.04217
Unverified 2026

Collision-free ternary attention

Represent a sparse higher-order attention head by a 3-uniform hypergraph whose hyperedge $(v,x,y)$ allows anchor token $v$ to aggregate a pairwise interaction between tokens $x$ and $y$. During mask construction, greedily reject edges that would create a $4$-cycle in the link graph $L(v)$, so the same pair of source tokens cannot reach an anchor through multiple redundant pairings. This produces a diversity-constrained sparse attention pattern with an explicit, measurable collision bound.

Useful5/10
Difficulty6/10
Novelty7/10
Paper: Regularity method for hypergraphs with $4$-cycle-free links arXiv:2608.24740
Unverified 2026

Möbius-compressed circular latent states

Represent a population of N circular latent states using a three-parameter Möbius transformation applied to fixed uniform reference phases, rather than learning N unrelated angles. The resulting states remain on the circle by construction and can model concentrated or nearly uniform phase populations through a single concentration parameter.

Useful5/10
Difficulty4/10
Novelty7/10
Paper: Unstable Manifolds for the Kuramoto Model: Convergence to the Ott-Antonsen Manifold arXiv:2608.24453
Unverified 2026

Fisher-Geometry Expert Menu

Construct a finite menu of experts or LoRA adapters by quantizing the oracle action manifold under a task-aware Fisher-information distortion rather than Euclidean parameter distance. The router can choose an installed expert after observing the input, but only k experts are stored or evaluated. The paper's frontier rate gives a falsifiable accuracy-versus-menu-size prediction.

Useful5/10
Difficulty6/10
Novelty4/10
Paper: Pre-Disclosure Experiment Menus: Oracle-Relative Risk and Joint Sample--Menu Asymptotics arXiv:2608.22905
Unverified 2026

Okada Non-Crossing Routing Attention

Replace dense token-to-token attention with a learned composition of adjacent routing operators whose connectivity is stored as a non-crossing labelled arc diagram. Canonicalize the composed routing program using the Okada relations, then execute only the surviving sparse token paths.

Useful4/10
Difficulty6/10
Novelty7/10
Paper: Diagrammatic Okada monoid and cellularity of the Okada algebra arXiv:2609.01440
Unverified 2026

Commutator-Polynomial Residual Adapter

Replace an unconstrained linear residual adapter by an operator \(T\) satisfying a polynomial relation in the commutator operator \(\Delta_A(X)=AX-XA\). Choose the polynomial roots in a stable half-plane so that repeated commutators become nilpotent, making repeated adapter application terminate algebraically and permitting a finite-polynomial inverse of \(I+T\).

Useful4/10
Difficulty6/10
Novelty9/10
Paper: Spectral Rigidity of Commutators: Dynamics, Resonance, and Nilpotency arXiv:2608.29574
Unverified 2026

Multiplicity-free Schur channel tying

Tie neural parameters across feature channels according to the Schur multiplicity pattern of the fermionic coinvariant representation. In the two-fermion case, use one learned parameter block for each Schur degree instead of independently parameterizing every ordered pair of fermionic channels, eliminating redundant copies while preserving the relevant GL2 channel symmetry.

Useful4/10
Difficulty5/10
Novelty7/10
Paper: Type $B$ fermionic coinvariant rings arXiv:2608.02881
Unverified 2026

Rough Multiplicative Random Features

Replace explicitly stored independent random positional features with deterministic multiplicative phase features generated from a small table of random phases indexed by primes. Restrict positions to integers whose prime factors exceed a slowly growing threshold, because the paper's central-limit result says periodic weighted sums over these rough integers recover Gaussian behavior despite strong multiplicative dependence.

Useful4/10
Difficulty5/10
Novelty9/10
Paper: Random Multiplicative Functions with Periodic Weights arXiv:2608.00184
Unverified 2026

Polynomial-expander feature mixer

Insert a fixed polynomial mixer before an MLP or retrieval index for tuples of discrete features. The mixer maps n+2 bounded scalar feature codes to one or several expanded scalar codes, and the paper's theorem guarantees that its image cannot collapse below order |A|^n when all coordinates come from a finite alphabet A. Use multiple independent permutations or coefficient choices to obtain a vector representation while retaining the deterministic algebraic structure.

Useful4/10
Difficulty4/10
Novelty7/10
Paper: On polynomial expanders with many variables arXiv:2608.26349