🧠 New paper by Clark et al. (2025) shows that the #dimensionality of #PopulationActivity in #RNN can be explained by just two #connectivity parameters: effective #CouplingStrength and effective #rank. Uses networks with rapidly decaying singular value spectra and structured overlaps between left and right singular vectors. Could be useful for interpreting large scale population recordings and connectome data I guess:

🌍 https://doi.org/10.1103/2jt7-c8cq

#CompNeuro #NeuralDynamics #Connectome

Гравитация – это иллюзия? Скрытые силы в действии

Гравитация традиционно считается одной из основных сил, определяющих динамику тел во Вселенной. Но что если её влияние можно уравновесить без использования тяговых двигателей и энергозатрат? Однако гипотеза о "гравитационно-угловом балансе" предлагает новый взгляд на это взаимодействие. В этой статье мы разберёмся с гипотезой гравитационно-углового баланса – концепцией, основанной на базовых законах физики, которая позволяет найти точки нулевого гравитационного воздействия и по-новому взглянуть на динамику тел в космосе, где гравитация фактически исчезает Читать

https://habr.com/ru/articles/881582/

#Gravitation #balance #Dimensionality #quantum #illusion

The Dimensions of dimensionality
https://www.cell.com/trends/cognitive-sciences/fulltext/S1364-6613(24)00189-X#

Globally interpretable feature dimensions are one property, among others like prediction performance and compactness, that researchers can prioritize when inferring latent representations.

Multidimensional representational spaces can capture complex structures such as hierarchical relationships, lexical entailment, and compositional features.

Superficially different representations, such as graphs and multidimensional data, can capture the same structural relationships under appropriate settings.

The dimensionality of a representation conveys relatively little information on its own.

#representation #dimensionality #cogsci #ml #datascience

Interesting set of Quanta articles today

Clue to Quantum Gravity Sits on Surfaces of Black Holes
https://www.quantamagazine.org/the-1-clue-to-quantum-gravity-sits-on-the-surfaces-of-black-holes-20240925

If Universe Is a Hologram This Math Could Decode It
https://www.quantamagazine.org/if-the-universe-is-a-hologram-this-long-forgotten-math-could-decode-it-20240925

Can Space-Time Be Saved?
https://www.quantamagazine.org/can-space-time-be-saved-20240925

Two Faces of Space-Time
https://www.quantamagazine.org/the-two-faces-of-space-time-20240925

...

#physics #QuantumMechanics #TheoreticalPhysics #dimensionality #amplituhedron #geometry #spacetime #QuantumPhysics #BlackHoles #holography #HolographicPrinciple #QuantumGravity #EmergentProperties

Pipeline release! nf-core/scdownstream vv0.0.1 - v0.0.1!

Please see the changelog: https://github.com/nf-core/scdownstream/releases/tag/v0.0.1

#clustering #dimensionality-reduction #integration #quality-control #scverse #single-cell #nfcore #openscience #nextflow #bioinformatics

'Spherical Rotation Dimension Reduction with Geometric Loss Functions', by Hengrui Luo, Jeremy E. Purvis, Didong Li.

http://jmlr.org/papers/v25/23-0547.html

#spherical #rotation #dimensionality