Publications associées à Schéma d'approximation en temps polynomial

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Maximizing Symmetric Submodular Functions

Moran Feldman

Symmetric submodular functions are an important family of submodular functions capturing many interesting cases, including cut functions of graphs and hypergraphs. Maximization of such functions subject to various constraints receives little attention by c ...

Association for Computing Machinery2017

Safe Adaptive Importance Sampling

Martin Jaggi, Sebastian Urban Stich, Anant Raj

Importance sampling has become an indispensable strategy to speed up optimization algorithms for large-scale applications. Improved adaptive variants - using importance values defined by the complete gradient information which changes during optimization - ...

2017

Practical Sketching Algorithms For Low-Rank Matrix Approximation

Volkan Cevher, Alp Yurtsever

This paper describes a suite of algorithms for constructing low-rank approximations of an input matrix from a random linear image, or sketch, of the matrix. These methods can preserve structural properties of the input matrix, such as positive-semidefinite ...

Society for Industrial and Applied Mathematics2017

Quasi-Polynomial Local Search for Restricted Max-Min Fair Allocation

Ola Nils Anders Svensson, Lukas Polacek

The restricted max-min fair allocation problem (also known as the restricted Santa Claus problem) is one of few problems that enjoys the intriguing status of having a better estimation algorithm than approximation algorithm. Indeed, Asadpour et al. [2012] ...

Assoc Computing Machinery2016

Group-Sparse Model Selection: Hardness and Relaxations

Volkan Cevher, Anastasios Kyrillidis, Luca Baldassarre, Nirav Bhan

Group-based sparsity models are proven instrumental in linear regression problems for recovering signals from much fewer measurements than standard compressive sensing. The main promise of these models is the recovery of ``interpretable" signals along with ...

Institute of Electrical and Electronics Engineers2016

Considerations for Rank-based Cryptosystems

Anna-Lena Horlemann, Joachim Rosenthal

Cryptosystems based on rank metric codes have been considered as an alternative to McEliece cryptosystems due to the relative difficulty of solving the rank syndrome decoding problem. Generic attacks have recently seen several improvements, notably in the ...

Ieee2016

Constant Factor Approximation for ATSP with Two Edge Weights

Ola Nils Anders Svensson, Jakub Tarnawski

We give a constant factor approximation algorithm for the Asymmetric Traveling Salesman Problem on shortest path metrics of directed graphs with two different edge weights. For the case of unit edge weights, the first constant factor approximation was give ...

Springer Int Publishing Ag2016

Efficient Algorithms for the Data Exchange Problem

Michael Christoph Gastpar, Sameer Pawar

In this paper, we study the data exchange problem, where a set of users is interested in gaining access to a common file, but where each has only partial knowledge about it as side-information. Assuming that the file is broken into packets, the side-inform ...

Institute of Electrical and Electronics Engineers2016

Schéma d'approximation en temps polynomial

Graph Chatbot

Chattez avec Graph Search

The weighted stable matching problem

Optimal Approximation for Submodular and Supermodular Optimization with Bounded Curvature

Maximizing Symmetric Submodular Functions

Safe Adaptive Importance Sampling

Practical Sketching Algorithms For Low-Rank Matrix Approximation

Quasi-Polynomial Local Search for Restricted Max-Min Fair Allocation

Group-Sparse Model Selection: Hardness and Relaxations

Considerations for Rank-based Cryptosystems

Constant Factor Approximation for ATSP with Two Edge Weights

Efficient Algorithms for the Data Exchange Problem

Optimal Approximation for Submodular and Supermodular Optimization with Bounded Curvature

The weighted stable matching problem

Practical Sketching Algorithms For Low-Rank Matrix Approximation

Safe Adaptive Importance Sampling

Group-Sparse Model Selection: Hardness and Relaxations

Maximizing Symmetric Submodular Functions

Quasi-Polynomial Local Search for Restricted Max-Min Fair Allocation

Constant Factor Approximation for ATSP with Two Edge Weights

Efficient Algorithms for the Data Exchange Problem

Considerations for Rank-based Cryptosystems