The paper investigates how neural representations that use superposition can encode more features than their dimensionality allows, focusing on the dimensionality required to compute Boolean gates. For a single threshold layer with a Gaussian random dictionary and uniformly random sparse Boolean inputs, the authors derive precise dimension thresholds under two error criteria: one based on vanishing expected error count and another on high‑probability correctness of every output. The study reveals a geometric distinction—ball geometry for expected‑count thresholds and box geometry for joint reliability—explains the gap via shared reads, and provides explicit thresholds for conjunction, disjunction, and majority gates, including a detailed analysis of pairwise conjunction near the threshold.
arXiv:2607. 21633v1 Announce Type: new Abstract: Logic Gate Networks (LGNs) implement computation through compositions of Boolean operations, yet unlike classical Boolean circuits, existing LGNs do not reliably benefit from increased depth.
By Taegun An, Dohun kim, Haebeom Lee, Changhee Joo
arXiv:2510. 04500v3 Announce Type: replace Abstract: This work demonstrates how increasing the number of neurons in a network without increasing its total number of non-zero parameters improves performance.
By Linghao Kong, Inimai Subramanian, Yonadav Shavit, Micah Adler, Dan Alistarh, Nir Shavit
arXiv:2609.09556v1 Announce Type: new
Abstract: Neural networks can leverage feature superposition to encode more concepts than dimensions, but cross-feature interference constrains the linear access...
By Enrico Vompa
arXiv:2607. 03664v1 Announce Type: new Abstract: The Gaussian Error Linear Unit is usually motivated as the expected output of an input-dependent stochastic Bernoulli gate.
By Roberto Rossi
arXiv:2607. 04800v1 Announce Type: new Abstract: Neural networks are thought to represent concepts as directions in their activation space, and superposition lets them encode more concepts than they have dimensions.
By Francisco Ferreira da Silva, Stefan Heimersheim