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Adaptation robuste de modeles HMM pour la verification du locuteur dependante du texte

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APPROXIMATING k-MEDIAN VIA PSEUDO-APPROXIMATION

Ola Nils Anders Svensson

We present a novel approximation algorithm for k-median that achieves an approximation guarantee of 1 + root 3 + epsilon, improving upon the decade-old ratio of 3 + epsilon. Our improved approximation ratio is achieved by exploiting the power of pseudo-app ...

Siam Publications2016

Exact asymptotics of distributed detection over adaptive networks

Ali H. Sayed

In [1], an important step toward the characterization of distributed detection over adaptive networks has been made by establishing the fundamental scaling law of the error probabilities. However, empirical evidence reported in [1] revealed that a refined ...

IEEE2015

Dynamics across the structural transitions at elevated temperatures in Na0.7CoO2

Martin Mansson

The layered transition-metal oxide Nax CoO2 has been studied extensively both for its correlated electronic properties as well as for potential battery applications. It was discovered that high-temperature Na ion vacancy order and dynamics can be very usef ...

E D P Sciences2015

MAP-Based Error Correction Mechanism for Five-Key Chording Keyboards

Pierre Dillenbourg, Bixio Rimoldi, Adrian Dan Tarniceriu

Because of different designs, different text input devices have different error patterns. If we consider these aspects when designing an error correction mechanism, we can obtain significantly lower error rates. In this paper, we propose and evaluate a spe ...

2015

First-order expansion of homogenized coefficients under Bernoulli perturbations

Jean-Christophe Mourrat

Divergence-form operators with stationary random coefficients homogenize over large scales. We investigate the effect of certain perturbations of the medium on the homogenized coefficients. The perturbations considered are rare at the local level, but when ...

Gauthier-Villars/Editions Elsevier2015

Ethnography of a political ritual: speeches given to new Swiss citizens by representatives of the state

Maxime Carl Felder

Our paper examines speeches given at citizenship ceremonies in Geneva (Switzerland) in order to understand what makes a foreigner a new member of a national and especially of a cantonal entity. Focusing on speeches by three ministers over an interval of 4 ...

2015

The impossible here

André Ourednik

The recurring challenge facing anyone who tries to localize realities in order to show their spatial relations on a map is the systematic impermanence of any objectivized space. Thus any space used as a base layer in thematic maps must be thought of as the ...

2014

Distributed birefringence measurements using polarisation correlation in phase-sensitive OTDR

Luc Thévenaz, Marcelo Alfonso Soto Hernandez, Xin Lu

A method based on phase-sensitive OTDR is proposed for distributed birefringence measurements along optical fibres. A high accuracy is experimentally demonstrated, enabling the characterisation of single-mode fibres with a minimum detectable birefringence ...

IEEE2014

An improvement on geometrical parameterizations by transfinite maps

Gianluigi Rozza, Laura Iapichino, Christoph Jäggli

We present a method to generate a non-affine transfinite map from a given reference domain to a family of deformed domains. The map is a generalization of the Gordon–Hall transfinite interpolation approach. It is defined globally over the reference domain. ...

Elsevier France-Editions Scientifiques Medicales Elsevier2014

Making sense of Knowledge Integration Maps

Beat Adrian Schwendimann

Digital knowledge maps are rich sources of information to track students’ learning. However, making sense of concept maps has been found challenging. Using multiple quantitative and qualitative methods in combination allows triangulating of changes in stud ...

Springer2014