Concept

F-space

Related publications (11)

Advancing control electronics for next-generation astronomical fiber robotic positioners

Next-generation spectroscopic surveys require compact, high-density fiber robotic positioner systems achieving 5um precision, placing strict constraints on the size and the power budget of the control electronics. We present a compact control electronics architecture that drives 21 theta–phi SCARA positioners (42 BLDC motors) on a single board, representing a significant increase in complexity compared to the electronics used in ongoing surveys such as SDSS-V and DESI, where each positioner relies on dedica

SPIE2026

Automatic Speech Recognition and Acoustic Analysis for Dysarthria Assessment in Telerehabilitation: User-Centered Design and Usability Study

Background: Dysarthria is a frequent motor speech disorder following a stroke, affecting up to 42% of survivors and resulting in reduced speech intelligibility and diminished quality of life. Clinical assessments, such as the Frenchay Dysarthria Assessment, Second Edition (FDA-2), rely heavily on the subjective judgment of speech-language pathologists (SLPs), which limits comparability and scalability. Telepractice solutions have the potential to extend access to care, but validated digital tools that combi

2026

Space Upper Bounds for α-Perfect Hashing

In the problem of minimal perfect hashing, we are given a size k subset A of a universe of keys [n] = {1,2, ⋯,n}, for which we wish to construct a hash function h: [n] → [k] such that h(·) maps A to [k] with no collisions, i.e., the restriction of h(·) to A is injective. In this paper, we extend the study of minimal perfect hashing to the approximate setting. For an α ∈ [0,1], we say that a randomized hashing scheme is α-perfect if for any input A of size k, it outputs a hash function which exhibits at most

IEEE2026

Conception et implémentation d'un outil de planification logistique pour le transport des spectateurs lors de Grands Événements

Mega-events, characterized by their international scope and massive influx of spectators, present significant logistical challenges, particularly when it comes to planning spectator transport. The complexity of managing the movement of spectators at these major gatherings calls for innovative and efficient solutions. The central aim of this project is to create a straightforward platform, offering an open-access alternative for planning spectator transport at mega-events. A preliminary benchmark has shown

EPFL2024

AVC Entropy Coding for MPEG Reconfigurable Video Coding

Ihab Mostafa Amin Mohamed Amer, Hussein Aman-Allah

The emergence of the Reconfigurable Video Coding (RVC) Standard has led to the development of its accompanying decoding Video Tool Library (VTL). This library is comprised of a set of video coding tool also referred to as Functional Units (FUs) that are co ...

2009

Generic representations of orthogonal groups: the mixed functors

In previous work, we defined the category of functors F-quad, associated to F-2-vector spaces equipped with a nondegenerate quadratic form. In this paper, we define a special family of objects in the category F-quad, named the mixed functors. We give the c ...

2007

Revisiting Doddington's Zoo: A Systematic Method to Assess User-dependent Variabilities

A systematic analysis of user-dependent performance variability in the context of automatic speaker verification was first studied by Doddington \etal (1998). Different categories of users were distinguished and were called by animal names such as sheep, goats, lambs and wolves. Although such distinctions are important, it does not directly discriminate well-behaved'' users from badly behaved'' users. In our context, the badly behaved users are those who will bring the performance down when added to the

IDIAP2006

Revisiting Doddington's Zoo: A Systematic Method to Assess User-dependent Variabilities

2006

F-ratio Client-Dependent Normalisation on Biometric Authentication Tasks

This study investigates a new client-dependent normalisation to improve biometric authentication systems. There exists many client-de-pendent score normalisation techniques applied to speaker authentication, such as Z-Norm, D-Norm and T-Norm. Such normalisation is intended to adjust the variation across different client models. We propose ``F-ratio'' normalisation, or F-Norm, applied to face and speaker authentication systems. This normalisation requires only that as few as two client-dependent accesses are

2005

An Investigation of F-ratio Client-Dependent Normalisation on Biometric Authentication Tasks

This study investigates a new \emph{client-dependent normalisation} to improve biometric authentication systems. There exists many client-de-pendent score normalisation techniques applied to speaker authentication, such as Z-Norm, D-Norm and T-Norm. Such normalisation is intended to adjust the variation across different client models. We propose ``F-ratio'' normalisation, or F-Norm, applied to face and speaker authentication systems. This normalisation requires only that \emph{as few as} two client-dependen

IDIAP2004

Improving Single Modal and Multimodal Biometric Authentication Using F-ratio Client-Dependent Normalisation

This study investigates a new client-dependent normalisation to improve a single biometric authentication system, as well as its effects on fusion. There exists two families of client-dependent normalisation techniques, often applied to speaker authentication. They are client-dependent score and threshold normalisation techniques. Examples of the former family of techniques are Z-Norm, D-Norm and T-Norm. There is also a vast amount of literature on the latter family of techniques. Both families are surveyed

IDIAP2004

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Related publications (11)

Advancing control electronics for next-generation astronomical fiber robotic positioners

SPIE2026

Automatic Speech Recognition and Acoustic Analysis for Dysarthria Assessment in Telerehabilitation: User-Centered Design and Usability Study

2026

Space Upper Bounds for α-Perfect Hashing

IEEE2026

Conception et implémentation d'un outil de planification logistique pour le transport des spectateurs lors de Grands Événements

EPFL2024