128 citations · 1.5k across the 42 of their papers we have counts for
43 papers
The Copycat Perceptron: Smashing Barriers Through Collective Learning
Giovanni Catania, Aurélien Decelle, Beatriz Seoane
We characterize the equilibrium properties of a model of coupled binary perceptrons in the teacher-student scenario, subject to a suitable cost function, with an explicit ferro…
Fast and Functional Structured Data Generators Rooted in Out-of-Equilibrium Physics
Alessandra Carbone, Aurélien Decelle, Lorenzo Rosset +1
In this study, we address the challenge of using energy-based models to produce high-quality, label-specific data in complex structured datasets, such as population genetics, RNA o…
Quantifying memory in spin glasses
Janus Collaboration, I. Paga, J. He +24
Rejuvenation and memory, long considered the distinguishing features of spin glasses, have recently been proven to result from the growth of multiple length scales. This insight, e…
Multifractality in spin glasses
Janus Collaboration, M. Baity-Jesi, E. Calore +21
We unveil the multifractal behavior of Ising spin glasses in their low-temperature phase. Using the Janus II custom-built supercomputer, the spin-glass correlation function is stud…
Unsupervised hierarchical clustering using the learning dynamics of RBMs
Aurélien Decelle, Lorenzo Rosset, Beatriz Seoane
Datasets in the real world are often complex and to some degree hierarchical, with groups and sub-groups of data sharing common characteristics at different levels of abstraction.…
Explaining the effects of non-convergent sampling in the training of Energy-Based Models
Elisabeth Agoritsas, Giovanni Catania, Aurélien Decelle +1
In this paper, we quantify the impact of using non-convergent Markov chains to train Energy-Based models (EBMs). In particular, we show analytically that EBMs trained with non-pers…
Thermodynamics of bidirectional associative memories
Adriano Barra, Giovanni Catania, Aurélien Decelle +1
In this paper we investigate the equilibrium properties of bidirectional associative memories (BAMs). Introduced by Kosko in 1988 as a generalization of the Hopfield model to a bip…
Memory and rejuvenation in spin glasses: aging systems are ruled by more than one length scale
Janus Collaboration, M. Baity-Jesi, E. Calore +22
Memory and rejuvenation effects in the magnetic response of off-equilibrium spin glasses have been widely regarded as the doorway into the experimental exploration of ultrametricit…
On the superposition principle and non-linear response in spin glasses
I. Paga, Q. Zhai, M. Baity-Jesi +25
The extended principle of superposition has been a touchstone of spin glass dynamics for almost thirty years. The Uppsala group has demonstrated its validity for the metallic spin…
Learning a Restricted Boltzmann Machine using biased Monte Carlo sampling
Nicolas Béreux, Aurélien Decelle, Cyril Furtlehner +1
Restricted Boltzmann Machines are simple and powerful generative models that can encode any complex dataset. Despite all their advantages, in practice the trainings are often unsta…
Soft disorder modulates the assembly path of protein complexes
Beatriz Seoane, Alessandra Carbone
The relationship between interactions, flexibility and disorder in proteins has been explored from many angles: folding upon binding, flexibility of the core relative to the periph…
Equilibrium and non-Equilibrium regimes in the learning of Restricted Boltzmann Machines
Aurélien Decelle, Cyril Furtlehner, Beatriz Seoane
Training Restricted Boltzmann Machines (RBMs) has been challenging for a long time due to the difficulty of computing precisely the log-likelihood gradient. Over the past decades,…
The complexity of protein interactions unravelled from structural disorder
Beatriz Seoane, Alessandra Carbone
The idea that structural disorder might be a novel mechanism of protein interaction is widespread in the Literature, although the number of statistically significant structural stu…
Temperature chaos is present in off-equilibrium spin-glass dynamics
Janus Collaboration, M. Baity-Jesi, E. Calore +22
We find a dynamic effect in the non-equilibrium dynamics of a spin glass that closely parallels equilibrium temperature chaos. This effect, that we name dynamic temperature chaos,…
Scaling law describes the spin-glass response in theory, experiments and simulations
Q. Zhai, I. Paga, M. Baity-Jesi +24
The correlation length , a key quantity in glassy dynamics, can now be precisely measured for spin glasses both in experiments and in simulations. However, known analysis method…
A scaling approach to estimate the COVID-19 infection fatality ratio from incomplete data
Beatriz Seoane
SARS-CoV-2 has disrupted the life of billions of people around the world since the first outbreak was officially declared in China at the beginning of 2020. Yet, important question…
Learning a Local Symmetry with Neural-Networks
Aurélien Decelle, Victor Martin-Mayor, Beatriz Seoane
We explore the capacity of neural networks to detect a symmetry with complex local and non-local patterns : the gauge symmetry Z 2 . This symmetry is present in physical problems f…
The Mpemba effect in spin glasses is a persistent memory effect
Janus collaboration, M. Baity-Jesi, E. Calore +21
The Mpemba effect occurs when a hot system cools faster than an initially colder one, when both are refrigerated in the same thermal reservoir. Using the custom built supercomputer…
Spin-glass--like aging in colloidal and granular glasses
Beatriz Seoane, Francesco Zamponi
Motivated by the mean field prediction of a Gardner phase transition between a "normal glass" and a "marginally stable glass", we investigate the off-equilibrium dynamics of three-…
Aging rate of spin glasses from simulations matches experiments
Janus Collaboration, M. Baity-Jesi, E. Calore +20
Experiments on spin glasses can now make precise measurements of the exponent governing the growth of glassy domains, while our computational capabilities allow us to make q…
Low-temperature anomalies of a vapor deposited glass
Beatriz Seoane, Daniel R. Reid, Juan J. de Pablo +1
We investigate the low temperature properties of two-dimensional Lennard-Jones glass films, prepared in silico both by liquid cooling and by physical vapor deposition. We identify…
Matching microscopic and macroscopic responses in glasses
Janus Collaboration, M. Baity-Jesi, E. Calore +20
We first reproduce on the Janus and Janus II computers a milestone experiment that measures the spin-glass coherence length through the lowering of free-energy barriers induced by…
An Ising Model for Metal-Organic Frameworks
Nicolas Höft, Jürgen Horbach, Victor Martin-Mayor +1
We present a three-dimensional Ising model where lines of equal spins are frozen in such that they form an ordered framework structure. The frame spins impose an external field on…
A statics-dynamics equivalence through the fluctuation-dissipation ratio provides a window into the spin-glass phase from nonequilibrium measurements
Janus Collaboration, M. Baity-Jesi, E. Calore +20
The unifying feature of glass formers (such as polymers, supercooled liquids, colloids, granulars, spin glasses, superconductors, ...) is a sluggish dynamics at low temperatures. I…