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The committee machine: Computational to statistical gaps in learning a two-layers neural network

Neural Information Processing Systems

Heuristic tools from statistical physics have been used in the past to locate the phase transitions and compute the optimal learning and generalization errors in the teacher-student scenario in multi-layer neural networks. In this contribution, we provide a rigorous justification of these approaches for a two-layers neural network model called the committee machine.




Natasha 2: Faster Non-Convex Optimization Than SGD

Neural Information Processing Systems

In diverse world of deep learning research has given rise to numerous architectures for neural networks (convolutional ones, long short term memory ones, etc). However, to this date, the underlying training algorithms for neural networks are still stochastic gradient descent (SGD) and its heuristic variants. In this paper, we address the problem of designing a new algorithm that has provably faster running time than the best known result for SGD.


German Christmas market opens nearly one year after deadly attack

FOX News

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A Theory-Based Evaluation of Nearest Neighbor Models Put Into Practice

Neural Information Processing Systems

The computational complexity of a property tester is the number of adjacency list entries it reads, denoted its queries . Many works in graph property testing focus on testing plain graphs that contain only the pure combinatorial information.