Publications associées à Proximity Operators of Discrete Information Divergences

Geometry-aware analysis of high-dimensional visual information sets

Over the past few decades we have been experiencing a data explosion; massive amounts of data are increasingly collected and multimedia databases, such as YouTube and Flickr, are rapidly expanding. At the same time rapid technological advancements in mobil ...

EPFL2009

Processor Speed Control with Thermal Constraints

Giovanni De Micheli, David Atienza Alonso, Srinivasan Murali

We consider the problem of adjusting speeds of multiple computer processors, sharing the same thermal environment, such as a chip or multichip package. We assume that the speed of each processor (and associated variables such as power supply voltage) can b ...

2009

Harmonic symmetrization of convex sets and of Finsler structures, with applications to Hilbert geometry

Marc Troyanov

David Hilbert discovered in 1895 an important metric that is canonically associated to any convex domain

\Omega

in the Euclidean (or projective) space. This metric is known to be Finslerian, and the usual proof assumes a certain degree of smoothness of t ...

2009

Extraction of audio features specific to speech production for multimodal speaker detection

Jean-Philippe Thiran, Jean-Marc Vesin, Murat Kunt, Vlad Popovici, Patricia Besson

A method that exploits an information theoretic framework to extract optimized audio features using video information is presented. A simple measure of mutual information (MI) between the resulting audio and video features allows the detection of the activ ...

2008

The role of perspective functions in convexity, polyconvexity, rank-one convexity and separate convexity

Bernard Dacorogna

Any finite, separately convex, positively homogeneous function on

\mathbb{R}^2

is convex. This was first established by the first author ["Direct methods in calculus of variations", Springer-Verlag (1989)]. Here we give a new and concise proof of this re ...

2008

Network Correlated Data Gathering with Explicit Communication: NP-Completeness and Algorithms

Martin Vetterli, Razvan Cristescu

We consider the problem of correlated data gathering by a network with a sink node and a tree based communication structure, where the goal is to minimize the total trans- mission cost of transporting the information collected by the nodes, to the sink nod ...

2006

The Kaspi Rate-Distortion Problem with Encoder Side-Information: Binary Erasure Case

Emre Telatar, Suhas Diggavi, Etienne Perron

We consider the problem of compressing a binary symmetric i.i.d. source stream for two decoders, one of which has access to side-information. Kaspi found the rate-distortion tradeoff for this problem for general discrete memoryless sources for the two case ...

2006

Inclusions différentielles et problèmes variationnels

Ana Margarida Fernandes Ribeiro

In this thesis we deal with three different but connected questions. Firstly (cf. Chapter 2) we make a systematic study of the generalized notions of convexity for sets. We study the notions of polyconvex, quasiconvex and rank one convex set. We remark tha ...

EPFL2006

The Kaspi Rate-Distortion Problem with Encoder Side-Information: Gaussian Case

Emre Telatar, Suhas Diggavi, Etienne Perron

We consider the problem of compressing a Gaussian source for two decoders, one of which has access to side-information. Kaspi has solved this problem for discrete memoryless sources for the two cases with and without encoder side-information. We focus on t ...

2005

Networked Slepian-Wolf: Theory, Algorithms and Scaling Laws

Martin Vetterli, Razvan Cristescu

Consider a set of correlated sources located at the nodes of a network, and a set of sinks that are the destinations for some of the sources. The minimization of cost functions which are the product of a function of the rate and a function of the path weig ...

2005

Proximity Operators of Discrete Information Divergences

Graph Chatbot

Chattez avec Graph Search

Geometry-aware analysis of high-dimensional visual information sets

Processor Speed Control with Thermal Constraints

Harmonic symmetrization of convex sets and of Finsler structures, with applications to Hilbert geometry

Extraction of audio features specific to speech production for multimodal speaker detection

The role of perspective functions in convexity, polyconvexity, rank-one convexity and separate convexity

Network Correlated Data Gathering with Explicit Communication: NP-Completeness and Algorithms

The Kaspi Rate-Distortion Problem with Encoder Side-Information: Binary Erasure Case

Inclusions différentielles et problèmes variationnels

The Kaspi Rate-Distortion Problem with Encoder Side-Information: Gaussian Case

Networked Slepian-Wolf: Theory, Algorithms and Scaling Laws

Geometry-aware analysis of high-dimensional visual information sets

Network Correlated Data Gathering with Explicit Communication: NP-Completeness and Algorithms

Inclusions différentielles et problèmes variationnels

The role of perspective functions in convexity, polyconvexity, rank-one convexity and separate convexity

The Kaspi Rate-Distortion Problem with Encoder Side-Information: Gaussian Case

Networked Slepian-Wolf: Theory, Algorithms and Scaling Laws

Harmonic symmetrization of convex sets and of Finsler structures, with applications to Hilbert geometry

Processor Speed Control with Thermal Constraints

Extraction of audio features specific to speech production for multimodal speaker detection

The Kaspi Rate-Distortion Problem with Encoder Side-Information: Binary Erasure Case