Séminaires DO

Organisation : Carine Jauberthie - Lieu habituel : salle EUROPE du LAAS

Le département DO fédère les activités de recherche de trois équipes de recherche du LAAS: Diagnostic Supervision et Conduite, Méthodes et Algorithmes en Commande, Recherche Opérationnelle/Optimisation Combinatoire/Contraintes.

A venir

Lundi 3 juin - 14h30 - Salle Tourmalet - Séminaire de Manuel Kauers :

" New ways to multiply 3x3 matrices "
The usual way of multiplying two 3x3 matrices requires 27 coefficient multiplications. It is known since 1976 that the product can also be computed with only 23 coefficient multiplications, and it is an open question whether 23 is optimal. For 23, several non-equivalent ways for computing the product are known. We extend the list by more than 13000 new matrix multiplication schemes. In the talk we will explain how we found them. This is joint work with Marijn Heule (Austin) and Martina Seidl (Linz).
 

Jeudi 27 juin - 14h30 - Salle Tourmalet - Séminaire de Peter Tang :

" Sparse coding by spiking neural networks: Convergence theory and computational results "

In a spiking neural network (SNN), individual neurons operate autonomously and only communicate with other neurons sparingly and asynchronously via spike signals. These characteristics render a massively parallel hardware implementation of SNN a potentially powerful computer, albeit a non von Neumann one. But can one guarantee that a SNN computer solves some important problems reliably? In this presentation, I formulate a mathematical model of one SNN that can be configured for a sparse coding problem for feature extraction. With a moderate but well-defined assumption, we prove that the SNN indeed solves sparse coding. To the best of our knowledge, this is the first rigorous result of this kind. This work is done jointly with Intel colleagues Tsung-han Lin and Mike Davies

Séminaires précédents

SEMINAIRES DO 2019

10/04/2019Séminaire des nouveaux permament du département DOV. Magron - M. Korda - M. Sciala
28/03/2019

Improved control of the boost inverter feeding AC loads as a part of a hybrid microgrid

Oswaldo López Santos

05/02/2019

Identifiability analysis and parameter estimation in PDE models.

Nathalie Verdière

Univ. du Havre, LMAH

SEMINAIRES DO 2018

19/10/2018

Control allocation, optimal output regulation and attack detection in cyber-physical systems

Sergio Galeani

Univ. di Roma, Tor Vergata

26/09/2018

CPCES: un planificateur pour le problème de planification déterministe conformante

Alban Grastien

Australian National Univ.

26/06/2018

A matheuristic for a class of scheduling problems for parallel batch processing machines

Lars Mönch

Univ. Hagen

30/05/2018

Fundamentals, applications and open problems in two classes of switching power converters: Self-oscillating sinusoidal generators and Power supplies for constant power loads - séminaire commun aux départements DO et GE

Luis Martinez-Salamero

Univ. Tarragona

14/02/2018

Introduction à l'algèbre différentielle avec application à l'estimation de paramètres.

François Boulier

CRIStAL, Lille

SEMINAIRES DO 2017

14/09/2017

Optimisation tools for greening road freight transport

Tolga Bektas (Southampton Business School)

28/06/2017

Nonlinear observers robust to measurement errors and their applications in control and synchronization

Daniel Liberzon (University of Illinois)

23/05/2017

Analyse et estimation robustes des systèmes hybrides non linéaires, une approche ensembliste.

Nacim Ramdani (Univ. d'Orléans, PRISME)

08/02/2017

From validated numerical integration to Differential Constraint Satisfaction Problems

Alexandre Chapoutot (U2IS, ENSTA)

SEMINAIRES DO 2016

01/12/2016

Piecewise Linear Multicommodity Flow Problems

Bernard Gendron (CIRRELT, Canada)

19/10/2016

Complex scheduling problems

Tamas Kis (Institute of Computer Science and Control, Hongrie)

29/06/2016

Safety controller synthesis for incrementally stable switched systems using multiscale symbolic models

Antoine Girard (L2S, Supélec)

SEMINAIRES DO 2015

11/05/2015

Arithmétique virgule flottante

Jean-Michel Muller (LIP, Univ. Lyon 1)

09/04/2015Observateur d'état distribué et detection de défauts dans les réseaux de capteurs

Michel Kinnaert (Univ. Libre de Bruxelles, Belgique)

05/02/2015

Differential analysis of nonlinear behaviors

Rodolphe Sépulchre (University of Cambridge, UK)

SEMINAIRES DO 2014

30/10/2014Bilevel programming and price setting problemsMartine Labbé (Univ. Libre de Bruxelles, Belgique)

04/07/2014

Model-based prognostics

Matthew Daigle (NASA, USA)

18/06/2014

Programmation linéaire, convexité tropicale, et jeux répétés

Stéphane Gaubert (INRIA and CMAP)