Section: Dissemination

Participation to conferences, seminars, invitations

Invited Talks

Invited talks at conferences :

— P. Alliez, “Méthodes numériques pour la reconstruction de surfaces à partir de nuages de points”, Annual Conference of the "Société Mathématique de France", Montpellier, France.

— J.-D. Boissonnat, “Manifold Reconstruction of Smooth Manifolds in 3 and Higher Dimensional Spaces”, Sibgrapi 2009, Rio de Janeiro, Brasil.

— F. Chazal, “A Geometric (and Partial) Introduction to Dimensionality Reduction”, conference Chimiométrie 2009, Paris, France.

Participation to invitation-only workshops :

— P. Alliez, Workshop on Computational Mathematics of Discrete Surfaces, Banff, Canada.

— F. Chazal, Workshop on Data Analysis using Computational Topology and Geometric Statistics, Banff, Canada.

— F. Chazal, “Geometric Inference for Probability Distribution”, Summer School on Theory and Practice of Computational Learning, Chicago, USA.

— J.-D. Boissonnat, “Meshing Manifolds embedded in High Dimensional Spaces with Light Scaffolding”, Dagstuhl Seminar on Computational Geometry, Dagstuhl, Germany, March 2009.

— M. Teillaud, “Triangulating the 3D Periodic Space”, Dagstuhl Seminar on Computational Geometry, Dagstuhl, Germany, March 2009.

Conferences and Seminars

Members of the project have presented their published articles at conferences. The reader can refer to the bibliography to obtain the corresponding list. We list below all other talks given in seminars, summer schools and other workshops.

— S. Pion, “Parallel Multi-Core Geometric Algorithms in CGAL”, Workshop on Massively Multiprocessor and Multicore Computers, Rocquencourt, France, February 2009.

— S. Pion, “CGAL: The Computational Geometry Algorithms Library”, Universität Karlsruhe, Germany, July 2009.

— S. Pion, “Robustesse des algorithmes géométriques: des outils arithmétiques à l'interface utilisateur dans CGAL”, Rencontres Arithmétique de l'Informatique Mathématique, RAIM'09, Lyon, France, October 2009.

— M. Teillaud, “CGAL”, Seminar at the Institut de Mathématiques de Toulouse, France, June 2009.

— M. Teillaud, “CGAL”, Colloquium series of the Master program Game and Media Technology, University of Utrecht, the Netherlands, November 2009.

— M. Teillaud, “Computing 3D Periodic Triangulations”, Mittagsseminar of the Institute of Theoretical Computer Science, ETH Zürich, Switzerland, September 2009.

— O. Devillers, “Succinct representation of planar graphs”, Journées Combinatoire et Algorithmes du Littoral Méditerranéen, Marseille, France, October 2009.

— P. de Castro, “Filtering Relocations on a Delaunay Triangulation”, Centro de Informatica, Universidade Federal de Pernambuco, Brasil, August 2009.

— M. Caroli, “Computing periodic triangulations”, Workshop Subdivide and Tile: Triangulating spaces for understanding the world, Lorentz Center, Leiden, The Netherlands, 16-20 November 2009.

— M. Caroli, “Triangulating the 3D Periodic Space”, Seminar of EPI Vegas , INRIA Nancy – Grand Est, June 2009.

— F. Chazal, “Geometric inference”, Workshop Subdivide and tile: Triangulating spaces for understanding the world (invited 2 hours tutorial), Lorentz Center, Leiden, The Netherlands.

— F. Chazal, “Geometric inference for probability distributions”, Seminar at the Laboratoire de Statistique Théorique et Appliquée de Paris 6, November 2009.

— D. Cohen-Steiner, “Geometric Inference for Probability Distributions”, seminar at ISTA Vienna, Austria.

— S. Oudot, Fundamentals of Communications and Networking, INRIA - Bell Labs workshop, June 1-3 2009, Murray Hill, USA.

Moreover, several members of the team participated to the Journées de Géométrie Algorithmique, which took place at Le Rouge Gazon, Saint Maurice sur Moselle in January 2009. V. de Silva gave a course entitled Topology in the 21st century: nonlinear statistics, sensor networks, and other applications , while F. Chazal gave an Introduction aux méthodes de réduction de la dimension . S. Oudot, P. Skraba, Q. Mérigot, N. Salman, P. Memari and S. Hornus also gave presentations.

The Geometrica seminar

http://www.inria.fr/sophia/geometrica/index.php?option=com_content&view=section&id=3&Itemid=3

The Geometrica seminar featured presentations from the following visiting scientists:

— Maks Ovsjanikov (Stanford) : Detection of intrinsic symmetries of shapes.

— Marc Glisse (LIS) : Persistance homologique et simplification.

— Gael Guennebaud : Defining surfaces from point sets.

— David Cazier (U. Strasbourg) : Cartes combinatoires et extensions.

— Guillaume Damiand (LIRIS) : Utilisation des cartes pour le traitement d'images et la modélisation géométrique.

— Mathieu Brédif (IGN) : Recalage de modèles polyédriques de bâtiments prenant en compte la topologie.

— Claire Mathieu (Brown U.) : Partitionnement avec données bruitées.

— Rien van de Weygaert (Groningen) : Morphology and structure of the cosmic web.

— Ulrich Bauer (U. Goettingen) : Topological simplification of discrete Morse functions on surfaces.

— Max Wardetzky (U. Goettingen) : How Geometry can help simulating elastic materials.

Scientific visits

— O. Devillers visited EPI-vegas in July.

— S. Pion visited Karlsruhe University in July.

— S. Oudot visited Stanford University in July.

— M. Teillaud and M. Caroli visited the University of Groningen in November.

— P. Alliez visited Caltech in November-December.

— J.-D. Boissonnat visited the Pontificia Universidade Catolica (PUC) and the Instituto Nacional de Matemática Pura e Aplicada (IMPA) in Rio de Janeiro.

— J.-D. Boissonnat visited Tsinghua University (Beijing) in december 2009.

The following researchers have been visiting Geometrica .

— Mikael Vejdemo Johansson (Stanford), two weeks in April.

— Mathieu Desbrun (Caltech) in April and June-July.

— Patrick Mullen (Caltech), in June-July.

— Dmitriy Morozov (Stanford), two weeks in July.

— Gert Vegter (Institute of Mathematics and Computing Science, Groningen) and Rien van de Weijgaert (Kapteyn Astronomical Institute, Groningen), two weeks in November.

— Dominique Attali (GipsaLab) and Xavier Goaoc ( EPI-vegas ), one week in November.

— Hazel Everett and Sylvain Lazard ( EPI-vegas ), one week in December.