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Statistical Mechanics of Learning

Objetivo

"Computers are now able to recognize people, to tell a dog from a cat, or to process speech so efficiently that they can answer complicated questions. This was still impossible only a decade ago. This progress is largely due to the development of the artificial “deep-learned neural networks”. Nowadays, “deep learning” is revolutionizing our life, prompting an economic battle between internet giants and the creation of a myriad of start-ups. As attractive and performant as it is, however, many agree that deep learning is largely an empirical field that lacks a theoretical understanding of its capacity and limitations. The algorithms used to ""train"" these networks explore a very complex and non-convex energy landscape that eludes most of the present theoretical methodology in machine learning. The behavior of the dynamics in such complicated ""glassy"" landscape is, however, similar to those that have been studied for decades in
the physics of disordered systems such as molecular and spin glasses.

In this project we pursue this analogy and use advanced methods of disordered systems to develop a statistical mechanics approach to deep neural networks. Our first main objective is to create a model for learning features from data via a multi-level neural network. We then regard this model as a kind of a spin glass system amenable to an exact asymptotic analysis via the replica and cavity method. Analyzing its phase diagram and phase transitions shall bring theoretical understanding of the principles behind the empirical success of deep neural networks. This approach will also lead to our second objective: the creation of a new class of fast, efficient, and asymptotically optimal message passing algorithms for deep learning. It is the synergy between the theoretical statistical physics approach and scientific questions from computer
science that makes the project’s objectives feasible and enables a leap forward in our understanding of learning from data.
"

Ámbito científico (EuroSciVoc)

Palabras clave

Programa(s)

Tema(s)

Régimen de financiación

ERC-STG - Starting Grant

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Convocatoria de propuestas

(se abrirá en una nueva ventana) ERC-2016-STG

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Institución de acogida

ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE
Aportación neta de la UEn
€ 599 753,36
Dirección
BATIMENT CE 3316 STATION 1
1015 Lausanne
Suiza
Región
Schweiz/Suisse/Svizzera Région lémanique Vaud
Tipo de actividad
Higher or Secondary Education Establishments
Enlaces
Coste total
€ 599 753,36

Beneficiarios (2)