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Traditional websites have long relied on users revealing their preferences explicitly through direct manipulation interfaces. However recent recommender systems have gone as far as using implicit feedback indicators to understand users' interests. More tha ...

Springer2009

How Users Perceive and Appraise Personalised Recommendations

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2009

Securing Online Advertising

Jean-Pierre Hubaux, Mark Felegyhazi, Julien Freudiger, Nevena Vratonjic

Online advertisement is a major source of revenues in the Internet. In this paper, we identify a number of vulnerabilities of current ad serving systems. We describe how an adversary can exploit these vulnerabilities to divert part of the ad revenue stream ...

2008

An Active Contour-based Atlas Registration Model for Automatic Subthalamic Nucleus Targeting on MRI: Method and Validation

Jean-Philippe Thiran, Meritxell Bach Cuadra, Xavier Bresson, Valérie Duay, Francisco Javier Sanchez Castro

This paper presents a new non parametric atlas registration framework, derived from the optical flow model and the active contour theory, applied to automatic subthalamic nucleus (STN) targeting in deep brain stimulation (DBS) surgery. In a previous work, ...

Springer Berlin / Heidelberg2008

Nonrigid medical image registration

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Over the last two decades medical image processing has become a fundamental tool in medicine, and brain imaging is a paradigm thereof. The fast development of the imaging acquisition techniques allows medical staff to dispose of a variety of data coming fr ...

EPFL2008

Design of multimodal dialogue-based systems

Miroslav Melichar

Multimodal dialogue systems integrate advanced (often spoken) language technologies within human-computer interaction methods. Such complex systems cannot be designed without extensive human expertise and systematic design guidelines taking into account th ...

EPFL2008

Factorized variational approximations for acoustic multi source localization

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Estimation based on received signal strength (RSS) is crucial in sensor networks for sensor localization, target tracking, etc. In this paper, we present a Gaussian approximation of the Chi distribution that is applicable to general RSS source localization ...

2008

Discriminative Keyword Spotting

Samy Bengio, David Grangier

This paper proposes a new approach for keyword spotting, which is not based on HMMs. The proposed method employs a new discriminative learning procedure, in which the learning phase aims at maximizing the area under the ROC curve, as this quantity is the m ...

2007

Application Dependent Video Segmentation Evaluation - A Case Study for Video Surveillance

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Evaluation of the performance of video segmentation algorithms is important in both theoretical and practical considerations. This paper addresses the problem of video segmentation assessment, through both subjective and objective approaches, for the speci ...

2006

Design methodology based on the analog blocks retargeting from bulk to FD SOI using EKV model

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This paper presents a methodology of a basic analog blocks retargeting from bulk to fully depleted (FD) SOI technology. The design methodology is generally not related to the model used for the circuit simulations. However, the proposed one is closely link ...

2006

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