Concept

Gram matrix

Publications associées (31)

Capacities, Systoles and Jacobians of Riemann Surfaces

To any compact Riemann surface of genus g one may assign a principally polarized abelian variety (PPAV) of dimension g, the Jacobian of the Riemann surface. The Jacobian is a complex torus and we call a Gram matrix of the lattice of a Jacobian a period Gra ...

EPFL2011

Identiﬁcation and the information matrix: how to get just sufﬁciently rich?

Ljubisa Miskovic

In prediction error identiﬁcation, the information matrix plays a central role. Speciﬁcally, when the system is in the model set, the covariance matrix of the parameter estimates converges asymptotically, up to a scaling factor, to the inverse of the infor ...

2009

Block variants of Hammarling's method for solving Lyapunov equations

Daniel Kressner

This article is concerned with the efficient numerical solution of the Lyapunov equation A(T) X + XA = -C with a stable matrix A and a symmetric positive semidefinite matrix C of possibly small rank. We discuss the efficient implementation of Hammarling's ...

Association for Computing Machinery2008

The effects of the global structure of the mask in visual backward masking

Michael Herzog

The visibility of a target can be strongly affected by a trailing mask. Research on visual backward masking has typically focused on the temporal characteristics of masking, whereas non-basic spatial aspects have received much less attention. However, rece ...

Elsevier2007

Plant species richness and environmental heterogeneity in a mountain landscape: effects of variability and spatial configuration

Alexandre Buttler

The loss of biodiversity has become a matter of urgent concern and a better understanding of local drivers is crucial for conservation. Although environmental heterogeneity is recognized as an important determinant of biodiversity, this has rarely been tes ...

2006

A single amino acid determinant governs the species-specific sensitivity of APOBEC3G to Vif action

Didier Trono, Priscilla Turelli, Bastien Mangeat

APOBEC3G (also known as CEM15) is an innate intracellular antiretroviral factor that is counteracted by the Vif protein of lentiviruses. While APOBEC3G orthologues from several species are active against a broad range of retroviruses, given Vif proteins ha ...

2004

Moving object detection between multiple and color images

Touradj Ebrahimi, Emrullah Durucan

There are several publications dedicated to the description and analysis of change detection between two gray-value images. This paper introduces new methods to detect moving objects between multiple images and to detect changes between color images or any ...

2003

Representation theory for high-rate multiple-antenna code design

Mohammad Amin Shokrollahi

Multiple antennas can greatly increase the data rate and reliability of a wireless communication link in a fading environment, but the practical success of using multiple antennas depends crucially on our ability to design high-rate space-time constellatio ...

2001

Multiple antennas and representation theory

Mohammad Amin Shokrollahi

2000

Contribution à l'identification et au réglage robustes

The parametric uncertainty is defined as the gap between the complete model of a dynamical process and its simplified nominal one which is normally used to investigate the properties of the system. It is because of this model mismatch that the role of sens ...

EPFL1995

Graph Chatbot

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Connectez-vous pour utiliser Chat avec Graph Search