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                           Toni Sellarès
Research

My primary research area is Computational Geometry and its application in fields like Computer Graphics, Geographic Information Systems, Facility Location, Spatio-temporal Data Mining and Geometrical Statistics. This research  is carried on in the scope of the Geometry and Graphics Group (GGG),  a research group in Computer Graphics and Computational Geometry, inscribed in the Institute of Informatics and Applications (University of Girona).

Girona Computational Geometry Group


Journal Papers

M. Fort, J. A. Sellarès and N. Valladares
Intersecting two families of sets on the GPU
Journal of Parallel and Distributed Computing, Volume 104, pp 167–178, 2017 [Link]

M. Fort, J. A. Sellarès
Efficient multiple bichromatic mutual nearest neighbor query processing

Information Systems, Volume 62, pp 136–154, 2016 [Link]

M. Fort, J. A. Sellarès
Solving multiple kth smallest dissimilarity queries for non metric dissimilarities with the GPU
Information Sciences, Volume 361–362, pp 66-83, 2016 [Link]

Canek Peláez, José Miguel Díaz-Báñez, Marco A. Heredia, J. Antoni Sellarès, Jorge Urrutia and Inmaculada Ventura
Convex blocking and partial orders on the plane
Computational Geometry: Theory and Applications, Volume 51, pp 55-66, 2016 [Link].

M. Fort, J. A. Sellarès 
Common influence region problems
Information Sciences, Volume 321, pp 116–135, 2015 [Link]

M. Fort, J. A. Sellarès and N. Valladares
A parallel GPU-based approach for reporting flock patterns 
International Journal of Geographical Information Science, Volume 28, Issue 9, pp 1877-1903, 2014 [Link].

M. Fort, J. A. Sellarès and N. Valladares
Computing and visualizing popular places
Knowledge and Information Systems,Volume 40, Issue 2, pp 411-437, 2014 [Link]

M. Fort, J. A. Sellarès  
Solving the k-influence region problem with the GPU
Information Sciences, Volume 269, pp 255–269,  2014 [Link]

M. Fort, J. A. Sellarès and N. Valladares
Finding extremal sets on the GPU
Journal of Parallel and Distributed Computing, Vol. 74, Issue 1, pp 1891–1899, 2014 [Link]

M. Fort, J. A. Sellarès
Finding influential location regions based on reverse k-neighbor queries
Knowledge-Based Systems,  Vol. 47, pp 35–52, 2013. [Link]

M. Fort, J.A. Sellarès
Approximating generalized distance functions on weighted triangulated surfaces with applications
Journal of Computational and Applied Mathematics, Vol. 236, Issue 14, pp 3461-3477, 2012. [Link]

N. Coll, M. Guerrieri, M.C. Rivara and J.A. Sellarès  
Adaptive simplification of huge sets of terrain grid data for geosciences applications
Journal of Computational and Applied Mathematics, Vol. 236, Issue 6, pp 1410-1422, 2011. [Link]

Y. Dıez and J.A. Sellarès
Noisy Colored Point Set Matching
Discrete Applied Mathematics, Vol. 159, Issue 6, pp 433-449, 2011. [Link]

N. Coll, N. Madern, J. A. Sellarès
Good-visibility Maps Visualization
The Visual Computer, Vol. 26, Num. 2, pp 109-120, 2010. [Link]

M. Fort, J.A. Sellarès
Computing Generalized Higer-Order Voronoi Diagrams on Triangulated Surfaces
Applied Mathematics and Computation, Vol. 215, pp 235-250, 2009. [Link]

S. Cabello, M. Fort, J.A. Sellarès
Higher-Order Voronoi Diagrams on Triangulated Surfaces
Information Processing Letters, Vol. 109, Issue 9, pp 440-445, 2009. [Link]

J.M. Díaz-Báñez, G. Hernandez, D. Oliveros, A. Ramirez-Vigueras, J.A. Sellarès, J. Urrutia, I. Ventura
Computing Shortest Heterochromatic Monotone Routes
Operational Research Letters, Vol. 36, Issue 6, pp 684-687,  2008. [Link]

I. Boada, N. Coll, N. Madern and J.A. Sellarès
Approximations of 2D and 3D Generalized Voronoi Diagrams

International Journal of Computer Mathematics, Vol 85:7, pp 1003 -1022, 2008. [Link]

N. Coll, M. Guerrieri, J.A. Sellarès
Combining improvement and refinement techniques: 2D Delaunay mesh adaptation under domain changes

Applied Mathematics and Computation, Vol. 201, pp 527–546, 2008. [Link]

S. Cabello, J. M. Díaz-Báñez, C. Seara, J.A. Sellarès, J. Urrutia, and I. Ventura.
Covering Point Sets with Two Disjoint Disks or Squares
Computational Geometry: Theory and Applications, Vol. 40, pp 195–206, 2008. [Link]

P. Bose, N. Coll, F. Huratdo and J.A. Sellarès
A General Approximation Algorithm for Planar Maps with Applications
International Journal of Computational Geometry  and Applications, Vol. 17, Issue 6, pp 529-554, 2007. [Link]

N. Coll, M. Fort, N. Madern and J.A. Sellarès
Multi-visibility maps of triangulated terrains
International Journal of Geographical Information Science, Vol. 21, No. 10, pp 1115–1134, 2007. [Link]

J.M. Díaz,  M. López and J.A. Sellarès
Locating an obnoxious plane
European Journal of Operational Research, Vol. 173, Issue 2, pp 556-564, 2006.  [Link]

J.M. Díaz, M. López and J.A. Sellarès
On finding a widest empty 1-corner corridor
Information Processing Letters, Vol. 98(5), pp 199-205, 2006.  [Link]

J.M. Díaz, F. Hurtado,  M. López and J.A. Sellarès
Optimal Projections onto Grids and  Finite Resolution Images
Journal of Visual Communication and Image Representation, Vol. 16, No. 3,  pp 233–249, 2005. [Link]

J.M. Díaz, F. Hurtado,  H. Meijer, D. Rappaport and J.A. Sellarès
The Largest Empty Annulus Problem
International Journal of  Computational Geometry and Applications, Vol. 13, No. 4, pp 317-325, 2003. [Link]

J. Antoni Sellarès and Godfried T. Toussaint
On the role of kinesthetic thinking in computational geometry
Journal of Mathematical Education in Science and Technolog y, Vol. 34, Num. 2, pp  219 - 237, 2003. [Link]

K. Miller, S. Ramaswami, P. Rousseeuw, J.A. Sellarès, D. Souvaine, I. Streinu and A. Struyf,
Efficient computation of location depth contours by methods of computational geometry
Statistics and Computing, Vol. 13(2), pp 153-162, 2003. [Link]

F. Gómez, F. Hurtado, J.A. Sellarès and G. Toussaint
On Degeneracies Removable by Perspective Projections
International Journal of Mathematical Algorithms, Vol. 2(3), pp 227-248, 2001. ISSN: 1027-9350. [Link]

F. Gómez, F. Hurtado, J.A. Sellarès and G. Toussaint
Nice Perspective Projections
Journal of Visual Communication and Image Representation,  Vol. 12, No. 4, pp 387-400, 2001. [Link]

X. Pueyo, F. Pérez, J.A. Sellarès and J.Suy
An Object-Oriented Approach for Teaching Visibility Computation Algorithms
Computers & Graphics, Vol. 20(4): pp 605-610, July/August 1996. [Link]

Conference Papers

N. Coll,  M. Fort and J.A. Sellarès
Computing the maximum overlap of a disk and a piecewise circular domain under translation
European Workshop on Computational Geometry (EuroCG), 2016.

N. Coll,  M. Fort and J.A. Sellarès
Computing the maximum overlap of a disk and a polygon with holes under translation 
Actas XVI Encuentros de Geometría Computacional, Barcelona, 2015.

Marta Fort, J. Antoni Sellarès
Solving multiple bichromatic mutual nearest neighbor queries with the GPU
DASFAA 2014: SIM3, Database Systems for Advanced Applications, Lecture Notes in Computer Science 2014, pp 308-316, Sanur, Bali,  2014. [Link]

Marta Fort, J. Antoni Sellarès
Common influence region queries
International Symposium on Voronoi Diagrams (ISVD 2013), pp 53-62, Saint Petesburg, Rusia, 2013. [Link]

Marta Fort, J. Antoni Sellarès
Solving common influence region queries with the GPU
XV Spanish Meeting on computational Geometry (EGC 2013), pp 15-19, Sevilla, España, 2013.

M. Fort,  J.A. Sellarès,  N. Valladares 
Reporting flock patterns on the GPU
XV Spanish Meeting on computational Geometry (EGC 2013), pp 19-23, Sevilla, España, 2013.

Marta Fort, J. Antoni Sellarès
GPU-Based Influence Regions Optimization
ICCSA 2012, LNCS Vol. 7333, pp 253-266,  2012. [Link]

Marta Fort, J. Antoni Sellarès
Maximizing k-influence regions
28th European Workshop on Computational Geometry, pp 181-184, Assisi, Italy, 2012.

Canek Peláez, José Miguel Díaz-Báñez, Marco A. Heredia, J. Antoni Sellarès, Jorge Urrutia and Inmaculada Ventura
Convex blocking and partial orders on the plane
Procd. 23rd Canadian Conference on Computational Geometry, pp 15-20, 2011.

M. Fort, J.A. Sellarès
Multiple range searching on the GPU
Actas XIV Encuentros de Geometría Computacional, Alcalá de Henares, Spain, pp 75-78, 2011.
Centre de Recerca Matemàtica, CRM Documents num. 8, Barcelona (ISSN: 2014-2323).

José Miguel Díaz-Báñez, Marco Antonio Heredia, Canek Peláez, J. AntoniSellarès, Jorge Urrutia, Inmaculada Ventura
Convex blocking and partial orders on the plane
Actas XIV Encuentros de Geometría Computacional, Alcalá de Henares, Spain, pp 221-224, 2011.
Centre de Recerca Matemàtica, CRM Documents num. 8, Barcelona (ISSN: 2014-2323).

M. Fort,  J.A. Sellarès,  N. Valladares
Computing Popularity Maps with Graphics Hardware
27th European Workshop on Computational Geometry, pp 83-86, Switzerland, 2011.

M. Fort, J.A. Sellarès and N. Valladares

Computing Popular Places using Graphics Processors
Proc. SSTDM-10 (in Cooperation with IEEE ICDM 2010), Sydney, Australia, pp 233-240, 2010.[Link]

N. Coll, M. Guerrieri, T. Paradinas, M.C. Rivara and J.A. Sellarès  

A Framework for Triangular Mesh Generation and Modification Processes
31th Iberian-Latin-American Congress on Computational Methods in Engineering, CILAMCE 2010.
Mecánica computacional (ISSN:  1666-6070), Vol XXIX, pp. 5987-5998, 2010. [Link]
                .
M. Fort, J.A. Sellarès
k-Reverse Facility Location Problems
Book of Abstracts of ALIO-INFORMS Joint International Meeting, Buenos Aires, Argentina, pp 124, 2010.

N. Coll, M. Guerrieri, J.A. Sellarès
2D Delaunay mesh generation with area/aspect-ratio constraints
Book of Abstracts of Third Chilean Workshop on Numerical Analysis of Partial Differential Equations (WONAPDE 2010), Concepción, Chile, pp 77, 2010.

M. Fort, J.A. Sellarès and N. Valladares
Reporting flock patterns via GPU
Proceedings 19th Annual Fall Workshop on Computational Geometry; Boston, USA, pp 85-86, 2009.

N. Coll, M. Guerrieri, M.C. Rivara and J.A. Sellarès  
Terrain approximation from grid data points

Actas XIII Encuentros de Geometría Computacional, Zaragoza, Spain, pp 101-108, 2009.

Y. Dıez, M. Fort and J.A. Sellarès
Solving Reverse k-Nearest Queries on Road Networks with the GPU 
Actas XIII Encuentros de Geometría Computacional, Zaragoza, Spain, pp 117-124, 2009.

M. Fort,  J.A.Y. D´ıez, M. Fort and J.A. Sellarès
GPU-based Computation of Distance Functions on Road Networks with Applications
Proc.
23rd ACM Symposium on Applied Computing, pp. 1320-1324, 2009. [Link]

N. Coll, M. Guerrieri, J.A. Sellarès
2D Delaunay mesh generation with area/aspect ratio constraints

25th European Workshop on Computational Geometry,  pp 239-242, 2009.

N. Coll, M. Guerrieri, M. C. Rivara, J. A. Sellarès
Accurate Interpolation of Terrain Surfaces from Over-sampled Grid Data
Proc. 17th International Meshing Roundtable, Springer, pp. 353-368, 2008. [Link]

Y. Diez,  M. López and J. A. Sellarès
Noisy Road network Matching
GIScience 2008,  Lecture Notes on Computational Science 5266, pp. 38-54, Springer-Verlag, 2008. [Link]

M. Fort,  J.A. Sellarès

Computing Distance Functions from Generalized Sources on Weighted Polyhedral Surfaces
ICCSA 2008, IEEE Computer Society,
Perugia, Italy, pp 394-404,  2008. [Link]

N. Coll, N. Madern, J. A. Sellarès
Drawing Good Visibility Maps with Graphics Hardware
Computer Graphics International, pp 286-293, 2008.

Y. Diez and J. A. Sellarès
Noisy Bottleneck Colored Point Set Matching in 3D
24th European Workshop on Computational Geometry,  pp 145-148, 2008.

N. Coll, N. Madern and J. A. Sellarès
Good Visibility Maps on Polyhedral Terrains
24th European Workshop on Computational Geometry,  pp 237-240, 2008.

Y. Diez, J. Antoni Sellarès
Efficient Colored Point Set Matching Under Noise
ICCSA 2007,  Lecture Notes on Computational Science 4705, pp. 26-40, Springer-Verlag, 2007. [Link]

M. Fort,  J.A. Sellarès
Generalized Higher-Order Voronoi Diagrams on Polyhedral Surfaces
Proc. 4th International Symposium on Voronoi Diagrams in Science and Engineering, IEEE Computer Society,
Wales, UK, pp 74-83,  2007. [Link]

Y. Diez, J.A. Sellarès
Colored Point Set Matching Under Noise in 3D
Actas XII Encuentros de Geometría Computacional, Valladolid, Spain, pp 67-74 , 2007.

N. Coll, M. Fort, N. Madern,  J.A. Sellarès
GPU-based Good Illumination Maps Visualization
Actas XII Encuentros de Geometría Computacional, Valladolid, Spain, pp 95-102 , 2007.

J. M. Díaz-Báñez, G. Hernández, D. Oliveros, A. Ramírez-Vigueras, J. A. Sellarès, J. Urrutia, I. Ventura
Poligonales heterocromáticas monótonas de mínima longitud
Actas XII Encuentros de Geometría Computacional, Valladolid, Spain, pp 187-193 , 2007.

N. Coll, M. Guerrieri J.A. Sellarès
Delaunay mesh generation with triangle area constrains
Actas XII Encuentros de Geometría Computacional, Valladolid, Spain, pp 231-238 , 2007.

M. Fort,  J.A. Sellarès
Generalized Voronoi Diagrams on Polyhedral Terrains
Actas XII Encuentros de Geometría Computacional, Valladolid, Spain, pp 239-246 , 2007.

N. Coll, M. Fort, N. Madern and J.A. Sellarès
Good Illumination Maps
23th European Workshop on Computational Geometry,  pp 65-68, 2007.

M. Fort and J.A. Sellarès
Generalized Source Shortest Paths on Polyhedral Surfaces
23th European Workshop on Computational Geometry,  pp 186-189, 2007.

P.K. Agarwal, S. Cabello, J.A. Sellarès and M. Sharir.
Computing a Center-Transversal Line
26th Conference on  Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2006),
Lecture Notes on Computational Science 4337, pp. 93-104, Springer-Verlag, 2006. [Link]

N. Coll, M. Guerrieri, J. A. Sellarès
Mesh Modification Under Local Domain Changes
Proc. 15th International Meshing Roundtable, Springer, pp 39-56, 2006. [Link]

N. Coll, M. Fort, N. Madern and J.A. Sellarès
Computing Terrain Multi-visibility Maps for a Set of View Segments Using Graphics Hardware
ICCSA 2006,  Lecture Notes on Computational Science 3980, pp. 81-90, Springer-Verlag, 2006. [Link]

Yago Diez, J. Antoni Sellarès
Noisy disk set matching under rigid motion
22th European Workshop on Computational Geometry,  pp 115-118, 2006.

Narcís Coll, M. Guerrieri, J. Antoni Sellarès
Modifying Delaunay Refined Two-Dimensional Triangular Meshes
22th European Workshop on Computational Geometry,  pp 129-132, 2006.

Narcís Coll, Marité Guerrieri, J. Antoni Sellarès
Cutting two-dimensional triangular meshes
Actas XI Encuentros de Geometría Computacional, Santander, Spain, pp 39-46 , 2005.

Narcís Coll, Marta Fort, J. Antoni Sellarès
Multi-visibility in terrains
Actas XI Encuentros de Geometría Computacional, Santander, Spain, pp 71-78 , 2005.

Inma Boada, Narcís Coll, Narcís Madern, J. Antoni Sellarès
The Voronoi-octree and its applications
Actas XI Encuentros de Geometría Computacional, Santander, Spain, pp 119-126, 2005.

Sergio Cabello, J. Antoni Sellarès
Computing a center-traversal line
Actas XI Encuentros de Geometría Computacional, Santander, Spain, pp 133-140 , 2005.

J. Miguel Díaz-Báñez, Carlos Seara, J. Antoni Sellarès, Jorge Urrutia, Inmaculada Ventura
Covering point sets with two convex objects
Actas XI Encuentros de Geometría Computacional, Santander, Spain, pp  247-254, 2005.

Yago Diez, J. Antoni Sellarès
Approximate disk matching under rigid motion
Actas XI Encuentros de Geometría Computacional, Santander, Spain, pp  279-286, 2005.

N. Coll, M. Fort, J.A. Sellarès
Approximate Multi-Visibility Map Computation

21th European Workshop on Computational Geometry,  pp 97-100, 2005.

I. Boada, N. Coll, N. Madern, J.A. Sellarès
Approximations of 3D Generalized Voronoi Diagrams

21th European Workshop on Computational Geometry,  pp 163-166, 2005.

J.M. Díaz-Báñez, C. Seara, J.A. Sellarès, J. Urrutia, I. Ventura
Covering Point Sets with Two Convex Objects
21th European Workshop on Computational Geometry,  pp 179-182, 2005.

I. Boada, N. Coll  and J.A. Sellarès
Multiresolution Approximations of Generalized Voronoi Diagrams.
Bubak, M.; Albada, G.D.v.; Sloot, P.M.A.; Dongarra, J. (Eds.)

ICCS'04, Lecture Notes on Computational Science 3039, Part IV, pp 98-106, 2004. [Link]

J.M. Díaz,  M. López and J.A. Sellarès
Computing Largest Empty Slabs

Laganà, A.; Gavrilova, M.L.; Kumar, V.; Mun, Y.; Tan, C.J.K.; Gervasi, O. (Eds.),
ICCSA 2004, Lecture Notes on Computational Science 3046, Part III, pp 99-108, 2004. [Link]

J.M. Díaz,  M. López and J.A. Sellarès
Finding a widest empty 1-corner corridor
20th European Workshop on Computational Geometry,  pp 57-60, 2004.

J.M. Díaz, F. Hurtado,  M. López and J.A. Sellarès
Optimal Point Set Projections onto Regular Grids
T. Ibaraki et al. (Eds.): 14th  Inter. Symp. on Algorithms and Computation (ISAAC), Japan, 
Lecture Notes on Computational Science 2906, pp 270-279, 2003. [Link]

N. Coll, F. Huratdo and J.A. Sellarès
Approximating planar subdivisions. Application to Voronoi diagrams
Actas X Encuentros de Geometría Computacional, Sevilla, Spain, pp 200-206, 2003.

I. Boada, N. Coll  and J.A. Sellarès
The Voronoi Quadtree. Dynamic maintenance
Actas X Encuentros de Geometría Computacional, Sevilla, Spain, pp 173-179, 2003.

J.M. Díaz,  M. López and J.A. Sellarès
Widest empty slab problems
Actas X Encuentros de Geometría Computacional, Sevilla, Spain, pp 82-87, 2003.

I. Boada, N. Coll  and J.A. Sellarès
Dynamically maintaining a hierarchical planar Voronoi diagram approximation
V. Kumar et al. (Eds): ICCSA 2003,  Lecture Notes on Computational Science 2669, pp. 836-846, Springer-Verlag, 2003.  [Link]

N. Coll, F. Hurtado, J.A. Sellarès
Approximating planar subdivisions ans generalized Vornoi diagrams from random sections
19th European Workshop on Computational Geometry,  pp 27-30, 2003.

I. Boada, N. Coll, J.A. Sellarès
The Voronoi-Quadtree: construction and visualization
Eurographics 2002 Short Presentation,  pp 349-355, 2002.

I. Boada, N. Coll, J.A. Sellarès
Hierarchical Planar Voronoi Diagram Approximations
Proceedings of the 14th Canadian Conference on Computational Geometry,  pp 40-45, 2002.

J.M. Díaz, F. Hurtado,  H. Meijer, D. Rappaport and J.A. Sellarès
The Largest Empty Annulus Problem
P.M.A. Sloot et al. (Eds.): ICCS 2002, Lecture Notes on Computational Science 2331, pp. 46-54, Springer-Verlag, 2002.  [Link]

J.M. Díaz, F. Hurtado,  M. López and J.A. Sellarès
Optimal Projections onto Grids
18th European Workshop on Computational Geometry, pp 51-55, 2002.

J.M. Díaz, F. Hurtado,  H. Meijer, D. Rappaport and J.A. Sellarès
Computing a largest empty annulus
5th International Conference on Operations Research,  Havana, March  2002.

N. Coll, J.A. Sellarès
Reconstrucción de regiones planas a partir de secciones aleatorias
Actas IX Encuentros de Geometría Computacional, Girona, Spain, pp 117-126,  2001.

N. Coll, J.A. Sellarès
Planar shape reconstruction from random sections
17th European Workshop on Computational Geometry - EWCG'01 , pp 121-124,  2001.

K. Miller, S. Ramaswami, P. Rousseeuw, J.A. Sellarès, D. Souvaine, I. Streinu and A. Struyf,
Fast Implementation of Depth Contours using Topological Sweep
Proc. 12th ACM-SIAM Symposium on Discrete Algorithms (SODA) 2001 , pp 690-699, 2001. [Link]

J.A.Sellarès, X. Pueyo, P.P. Vázquez
An improved sampling  method for gap preserving in LDI rendering
Research Report IIiA 99- 11-RR, 1999.

J.A.Sellarès, X. Pueyo, P.P. Vázquez
Improved sampling  for  Layered Depth Orthogonal Images
Research Report IIiA 99- 07-RR, 1999.

F. Gómez, F. Hurtado, J.A. Sellarès and G. Toussaint
Perspective Projections and Removal of Degeneracies
Proceedings of the Tenth Canadian Conference on Computational Geometry, pp 100-101, 1998

F. Gómez, F. Hurtado, J.A. Sellarès and G. Toussaint
Verificación de Imágenes Geométricas (in Spanish)
Actas VIII Congreso Español de Informática Gráfica, CEIG'98, pp 163-176, 1998
Verification of Geometric Images (English version)
Research Report IIiA 99-10-RR, 1999.

F. Hurtado and J.A. Sellarès
Proyecciones Perspectivas Regulares. Correspondencia por Proyección Perspectiva entre Configuraciones Planas de Puntos (in Spanish)
Actas VII Encuentros de Geometría Computacional, pp 57-70, 1997

Invited Presentations at Conferences

J.A. Sellarès
Geometría Computacional y Hardware Gráfico

Actas XII Encuentros de Geometría Computacional, Valladolid, Spain, 2007. [Link]

Books

J.A. Sellarès
Fundamentos de los Gráficos con Ordenador (in Spanish)
Ediciones y Distribuciones Universitarias S.A.,  Barcelona, Spain,  1988
ISBN 84-7747-012-X.

Narcís Coll, J. Antoni Sellarès (editors)
Actas de los IX Encuentros de Geometría Computacional
Universitat de Girona , Julio de 2001
ISBN 84-8458-060-1

Ph. D. Thesis

Structural and  Algorithmic Aspects of Geometric Projections
Universitat Politècnica de Catalunya. Barcelona, May  2000  

Workshops

Workshop on Computational  Geometry in Statistics
Organized by Godfried Toussaint (McGill University, Montreal, Quebec, Canada)
Bellairs Research Institute of McGill University , Barbados
January 29 to February 5, 1999

First Cuban Workshop on Algorithms and Data Structures
Organized by Godfried Toussaint (McGill University, Montreal,  Canada) and Antonio Mesa (Universiadad de la Habana, Cuba)
Universiadad de la Habana, Cuba
April 30 to May 4, 2001

Primer Taller de Optimización Geométrica
Organized by José Miguel Díaz-Bañez (Universidad de Sevilla, España)
El Rocío, Huelva, España
July 1-7, 2002

Segundo Taller de Optimización Geométrica
Organized by José Miguel Díaz-Bañez (Universidad de Sevilla, España)
El Rocío, Huelva, España
July 5-10, 2004

International Workshop on Discrete and Computational Geometry
Organized by  Tetsuo Asano (JAIST, Japan) and David Rappaport (Quenn's University, Canada)
JAIST (Japan Advanced Institute of Science and Technology), Nomi, Japan
May 16-18, 2005

Workshop on Computational Geometry,
Organized by Ferran Hurtado
Caldes de Malavella, España.
June 25-30, 2006

1er Taller Ibero-Americano de Geometría Combinatoria y Computacional,
Organized by Jorge Urrutia and José Miguel Díaz-Bañez
Guanajuato, México.
December  11-15, 2006

2n Taller Ibero-Americano de Geometría Combinatoria y Computacional,
Organized by Jorge Urrutia and José Miguel Díaz-Bañez
La Laguna, Tenerife, España.
December 28  - February 1, 2008

3er Taller Ibero-Americano de Geometría Combinatoria y Computacional,
Organized by Jorge Urrutia and José Miguel Díaz-Bañez
Oxaca, México.
January
26 - 30, 2009

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