At Conferences:Special
Lecture, London Mathematical Society and Real Sociedad Matematica
Española, Madrid, Spain, August 25, 2006, "Musical Rhythm
and Computational Mathematics."At Universities:
COLLOQUES
du DIRO, Department of Computer Science and Operations Research,
University of Montreal, March 16, 2006, "Computational Methods for the
Analysis and Generation of Musical Rhythm Timelines."
SOCS-Colloquium,
School
of Computer Science, McGill University, January 13, 2006, "Computational
Methods for the Analysis and Generation of Musical Rhythm Timelines."
Guest Lecture in BASC-201, Integrative Topics
in Arts and Science, McGill University, Montreal, Canada, January
10, 2006, "The Mathematics and Computer Science of Rhythm and
Melody - II."
Guest Lecture in BASC-201, Integrative Topics
in Arts and Science, McGill University, Montreal, Canada, January
5, 2006, "The Mathematics and Computer Science of Rhythm and Melody
- I."
2005
At Conferences:
Graduate Summer School: Intelligent Extraction
of Information from Graphs and High Dimensional Data, Institute for
Pure and Applied Mathematics, University of California at Los Angeles,
July 25, 2005,
"Proximity Graphs for Instance-Based Learning."
55th Session of the International Statistics Institute,
Sydney, Australia, April 12, 2005, "Geometric Decision Rules for High
Dimensions."
At Universities:
UdeM-McGill-MITACS Machine Learning Seminar, School
of Computer science, McGill University, October 12, 2005, "Musical Rhythm
Similarity Measures with Symbolic Input: Models, Algorithms, and Applications."
Computer Science Colloquium, Department of
Computer Science, Tufts University, Medford, Massachussetts, April
27, 2005,
"Computational Methods for the Analysis and Generation of
Musical Rhythm Timelines."
African Music Systems Lecture, Department
of Music, Tufts University, Medford, Massachussetts, April 28, 2005,
"Computational
Methods for the Analysis and Generation of Musical Rhythm Timelines."
Computationl Geometry Guest Lecture, School
of Information Technologies, University of Sydney, Thursday April 14, 2005,
"Voronoi Diagrams, Proximity Graphs, and Applications to Instance-Based
Learning."
The Basser Seminar Series, School of Information
Technologies, University of Sydney, Wednesday April 13, 2005, "Computational
Methods for the Analysis and Generation of Musical Rhythm Timelines."
Guest Lecture in COMP-644, Pattern Recognition,
McGill
University, Montreal, Canada, March 23, 2005, "Geometric Decision
Rules for High Dimensions."
Research Colloquium, Centro de Investigacion
en Matematica Pura y Aplicada, Escuela de Matematica, Universidad de Costa
Rica, San Jose, Costa Rica, February 28, 2005, "Constructing Polyhedra
with Specified Points as their Vertices."
CIRMMT Lecture, Center for Interdisciplinary
Research in Music Media and Technology, Faculty of Music, McGill University,
Montreal, Canada, February 18, 2005, "Computational Methods for
the Analysis and Generation of Musical Rhythm Timelines."
Guest Lecture in COMP-644, Pattern Recognition,
McGill
University, Montreal, Canada, February 16, 2005, "Music Recognition."
Guest Lecture in BASC-201, Integrative Topics
in Arts and Science, McGill University, Montreal, Canada, January
11, 2005, "The Computer Science of Melody."
Guest Lecture in BASC-201, Integrative Topics
in Arts and Science, McGill University, Montreal, Canada, January
6, 2005, "The Computer Science of Rhythm."
2004
At Conferences:
Canadian Mathematical Society Winter 2004 Meeting,
Montreal,
Canada, December 11-13, 2004, "On constructing a polyhedron from its
vertex set."
14th Annual Fall Workshop on Computational Geometry,
Massachussetts Institute of Technology, November 19-20, 2004, "Computational
Geometric Aspects of Musical Rhythm."
Workshop on Data Mining Methodology and Applications,
The Fields Institute, Toronto, Canada, October 28-30, 2004, "Proximity
Graph Methods for Data Mining."
Japan Conference on Discrete and Computational
Geometry,
Tokay University, Tomigaya, Shibuya-ku,Tokyo, Japan, October
8-11, 2004, "The Geometry of Musical Rhythm."
Plenary Lecture, Third International Conference
on FUN with Algorithms, Isola d'Elba, Italy, May 26-28, 2004, "Rhythm
and Mathematics: Problems at the Interface."
Illustrated Conference, PERCUBA-2004: 15th International
Percussion Festival, Instituto Superior de Arte, Havana, Cuba, April
20-24, 2004, "Nuevas Formas de Ensenar las Claves Binarias y Ternarias
Afrocubanas por Medio de Matematica y Geometria."
At Universities
Algorithms Seminar, School of Computer Science, McGill
University, Wednesday, November 17 2004, "Computational Geometric Aspects
of Musical Rhythm."
McGill Computational Science and Engineering Seminar,
Friday September 24, 2004, "Linkage Reconfiguration: Geometric and Computational
Aspects with Applications to Knot Theory, Robotics, Polymer Physics, and
Bioinformatics".
Computing Science Seminar, Simon Fraser University,
Burnaby, Canada, March 26, 2004, "Mathematical Measures of Syncopation
in Musical Rhythm."
2003
At Conferences:
Geometry Day, University of North Texas, Denton,
Texas, U.S.A., October 25, 2003, "On Polyhedra Induced by Point Sets
in Space."
First International Workshop on Computational
Music Theory, Universidad Politecnica de Madrid, Escuela Universitaria
de Informatica, June 30 to July 4, 2003, "Computational Music Theory."
First Joint International Meeting of the American
Mathematical Society and the Real Sociedad Matematica Española,
University of Sevilla, Sevilla, Spain, June 18-21, 2003, "On Polyhedra
Induced by Point Sets in Space."
International Conference on Computational Science
and its Applications, Montreal, Canada, May 18-21, 2003, "Geometric
Graphs for Improving Nearest Neighbor Decision Rules."
At Universities:
Mathematics Seminar, Department of Applied Mathematics,
Universidad Politecnica de Madrid, July 10, 2003, "Simple proofs of
a geometric property of four-bar linkages."
Seminar, Departmento de Ciencias Experimentales y
Ingenieria, Universidad Rey Juan Carlos, Mostoles, Madrid, Spain, July
9, 2003, "On polyhedra induced by point sets in space."
Mathematics Seminar, Centro de Investigacion en Matematica
Pura y Aplicada, Escuela de Matematica, Universidad de Costa Rica, San
Jose, Costa Rica, February 25, 2003, "Geometric Proximity Graphs for
Improving Nearest Neighbor Decision Rules."
2002
At Conferences:
CASCON-2002, Workshop on Pattern Recognition and
Prediction, Hilton Suites Toronto-Markham, Toronto-Markham, Canada, October
2, 2002,
"Proximity Graphs for Instance-Based Learning."
Facility Location Optimization Workshop, Simon Fraser
University, Burnaby, B.C. Canada, June 16-18, 2002, "Optimal Location
of Prototypes for Nearest Neighbor Classification."
Interface-2002, 34th Symposium on Computing and Statistics
(theme: Geoscience and remote Sensing), Ritz-Carlton Hotel, Montreal, Canada,
April 17-20, 2002, "Proximity Graphs for Nearest Neighbor Decision Rules:
Recent Progress."
At Universities:
Computing Science Seminar, Simon Fraser University,
Burnaby, November 27, 2002, "Geometric Methods for Improving Nearest
Neighbor Decision Rules."
Computing Science Seminar, Simon Fraser University,
Burnaby, November 13, 2002, "Classification and Phylogenetic Analysis
of African, Brazilian and Cuban Clave Rhythms."
Computing Science Seminar, Simon Fraser University,
Burnaby, October 30, 2002, "The Four-Bar Linkage: Applications and Simple
Proofs of a Geometric Property."
Seminar, School of Computing, Queens University,
Kingston, Canada, October 3, 2002, "Proximity Graphs for Instance-Based
Learning."
Seminar, Centre for Intelligent Systems and their
Applications (CISA), University of Edinburgh, Edinburgh, Scotland, September
10, 2002,
"Proximity Graphs for Instance-Based Learning."
Seminar, Departmento de Ciencias Experimentales y
Ingenieria, Universidad Rey Juan Carlos, Mostoles, Madrid, Spain, June
28, 2002, "Proximity Graphs for Nearest Neighbor Pattern Classification."
2001
At Conferences:
IX Encuentros de Geometria Computacional, University
of Girona, Girona, Spain, July 2-4, 2001, "Open Problems in Reconfiguration
of Polygons in Space."
965th Meeting of the American Mathematical Society,
University of Nevada, Las Vegas, USA, April 21-22, 2001, "Convexifying
polygons in 3D: A survey." Abstract # 965-51-108, p. 36.
2000
At Conferences:
957th Meeting of the American Mathematical Society,
University of Toronto, Canada, September 23-24, 2000, "Recent results
on reconfiguring polygonal chains in space."
Keynote Address, SPIE International
Symposium on Optical Science and Technology, Vision Geometry IX, San Diego,
California, July 30 - August 4, 2000, "The complexity of computing nice
viewpoints of objects in space."
SIAM Discrete Mathematics Meeting, Minneapolis, Minnesota,
June 12-15, 2000, "Convexifying polygonal linkages in space and its
applications to knot theory, polymer physics and molecular biology."
Meeting of the American Mathematical Society, University
of Massachusetts at Lowell, in Lowell, Massachussetts, April 1-2, 2000,
"Recent
results on untangling unknots in space."
The LIMDA Seminar,
(Laboratorio de Investigacion en Matematica Discreta
y Algoritmica), Department of Applied Mathematics, Universidad Politecnica
de Catalunya, Barcelona, Thursday, May 4, 2000, "Recent Results on Untangling
Unknots in Space."
1999
At Conferences:
VIII Encuentros de Geometria Computacional, Castellon,
Spain, July 7-9, 1999, "Computational Polygonal Entanglement Theory."
At Universities:
Computer Science Seminar, University of New Brunswick,
Fredericton, August 31, 1999, "The Erdos-Nagy Theorem and its Applications
to Knot Theory, Polymer Physics and Molecular Biology."
Geometry Seminar, Department of Mathematics, Courant
Institute, New York University, April 20, 1999, "Untangling Polygonal
Linkages."
Computer Science Seminar, University of Quebec in
Montreal, April 9, 1999, "Untangling Polygonal Linkages."
1998
At Conferences:
Sixth Annual Meeting of the Belgian Statistical Society,
Ol Fosse d'Outh, Houffalize, Belgium, October 8-9, 1998, "Computational
Geometry for Document Analysis."
At Universities:
ACM Seminar, School of Computer Science, McGill University,
Montreal, November 25, 1998, "Mobility of Objects in Space."
Seminar, Department of Applied Mathematics II, University
of Sevilla, Spain, May 26, 1998, "Mobility of Objects in Space."
1997
At Conferences:
924th Meeting of the American Mathematical Society,
Montreal, Quebec, Canada, September 26-28, 1997, "Constrained Facility
Location."
VII Encuentros de Geometria Computacional, Madrid,
July 7-9, 1997, "Eliminacion de Degeneraciones en Geometria Computacional."
At Universities:
Seminar, School of Computer Science, McGill University,
Montreal, Canada, November 19, 1997, "The Constrained Minimum Spanning
Circle Problem."
Seminar, School of Computer Science, Carleton University,
Ottawa, Canada, November 13, 1997, "Constrained Facility Location."
Seminar, Department of Mathematics and Computer Science,
University of Quebec, Trois-Rivieres, Canada, April 9, 1997, "On Removing
Non-Degeneracy Assumptions in Computational Geometry."
Computer Science Colloquium, University of Minnesota,
Minneapolis, Minnesota, U.S.A., March 3, 1997, "On Removing Non-Degeneracy
Assumptions in Computational Geometry."
1996
At Conferences:
914th Meeting of the American Mathematical Society,
Lawrenceville, New Jersey, USA, October 5-6, 1996, "On Removing Degeneracies
in Computational Geometry ."
Carleton Algorithmic Theory Symposium, Ottawa, Canada,
September 28, 1996, "On Removing Degeneracies in Computational Geometry
."
Conference on Facility Location, University of Sevilla,
Spain, April 22-23, 1996, "Computational Geometry and Facility Location
."
At Universities:
Computational Geometry Seminar, Dept. of Applied
Mathematics II, Universidad Politecnica de Catalunya, Barcelona, Spain,
July 10, 1996, "Removing Degeneracies in Computational Geometry."
Computational Geometry Seminar, Dept. of Applied
Mathematics II, Universidad Politecnica de Catalunya, Barcelona, Spain,
July 3, 1996, "Facility Location."
Computational Geometry Seminar, Dept. of Applied
Mathematics II, Universidad Politecnica de Catalunya, Barcelona, Spain,
June 18, 1996, "Mobility of Objects in Space - II."
Computational Geometry Seminar, Dept. of Applied
Mathematics II, Universidad Politecnica de Catalunya, Barcelona, Spain,
June 12, 1996, "Mobility of Objects in Space - I."
Computational Geometry Seminar, Dept. of Applied
Mathematics II, Universidad Politecnica de Catalunya, Barcelona, Spain,
June 5, 1996, "Computing Shortest Transversals of Planar Sets."
Computational Geometry Seminar, Dept. of Applied
Mathematics II, Universidad Politecnica de Catalunya, Barcelona, Spain,
May 29, 1996, "Triangulating a Simple Polygon Efficiently in Practice."
Computational Geometry Seminar, Dept. of Applied
Mathematics II, Universidad Politecnica de Catalunya, Barcelona, Spain,
May 22, 1996, "Proximity Graphs and Applications."
Computational Geometry Seminar, Dept. of Applied
Mathematics, Universidad Politecnica de Madrid, Spain, May 8, 1996, "Removing
Degeneracies in Computational Geometry."
Computational Geometry Seminar, Dept. of Applied
Mathematics, Universidad Politecnica de Madrid, Spain, April 30, 1996,
"Facility Location."
Conference on Computational Geometry and Facility
Location, Universidad de Sevilla Spain, April 22, 1996, "Facility Location
and Computational Geometry."
Computational Geometry Seminar, Dept. of Applied
Mathematics, Universidad Politecnica de Madrid, Spain, April 17, 1996,
"Mobility of Objects in Space - II."
Computational Geometry Seminar, Dept. of Applied
Mathematics, Universidad Politecnica de Madrid, Spain, April 12, 1996,
"Mobility of Objects in Space - I."
Computational Geometry Seminar, Dept. of Applied
Mathematics, Universidad Politecnica de Madrid, Spain, April 10, 1996,
"Aperture-Angle Optimization in Two and Three Dimensions."
Computational Geometry Seminar, Dept. of Applied
Mathematics, Universidad Politecnica de Madrid, Spain, March 26, 1996,
"Computing Shortest Transversals of Planar Sets."
Computational Geometry Seminar, Dept. of Applied
Mathematics, Universidad Politecnica de Madrid, Spain, March 22, 1996,
"Quadrangulations of Planar Sets."
Computational Geometry Seminar, Dept. of Applied
Mathematics, Universidad Politecnica de Madrid, Spain, March 20, 1996,
"ProximityGraphs and Their Applications."
Computational Geometry Seminar, Dept. of Applied
Mathematics, Universidad Politecnica de Madrid, Spain, March 13, 1996,
"EfficientTriangulation of Planar Sets."
In Industry:
INRIA, Sophia-Antipolis, France, July 26, 1996, "Removing
Degeneracies in Computational Geometry."
1995
At Conferences:
Computational Geometry Day, University of Newcastle,
Australia, November 29, 1995, "Drawing Nice Projections of Objects in
Space ."
4th International Workshop on Algorithms and Data
Structures, Kingston, Canada, August 16-18, 1995, "Quadrangulations
of Planar Sets."
VI Encuentro de Geometria Computacional, Barcelona,
Spain, July 5-7, 1995, "Quadrangulations."
At Universities:
Computer Science Seminar, University of New South
Wales, Australia, December 18, 1995, "ComputingQuadrangulations
of Sets."
Electrical and Computer Engineering Seminar, University
of Newcastle, Australia, November 20, 1995, "Movable Separability of
Objects in Space ."
Basser Department of Computer Science Seminar, University
of Sydney, Australia, November 2, 1995, "ComputingQuadrangulations
of Sets."
Computer Science Seminar, University of Newcastle,
Australia, October 18, 1995, "ComputingQuadrangulations of Sets."
Computing Science Seminar, Simon Fraser University,
Burnaby, Canada, June 15, 1995, "Quadrangulations of Planar Sets."
Geometry Seminar, Courant Institute of Mathematical
Sciences, New York University, New York, April 25, 1995, "Quadrangulations
of Planar Point Sets"
1994
At Conferences:
Third Annual Symposium on Document Analysis and Information
Retrieval, Alexis Park Hotel, Las Vegas, Nevada, April 12, 1994 "Computational
Geometry for Document Analysis."
892nd Meeting of the American Mathematical Society,
Polytechnic University, Brooklyn, New York, April 10, 1994, "Some Aperture-Angle
Optimization Problems."
Twenty Third Computational Geometry Day, Courant
Institute of Mathematical Sciences, New York University, March 11, 1994,
"Geometric
and Computational Aspects of Manufacturing Processes."
At Universities:
Computing Science Seminar, School of Computing Science,
Simon Fraser University, Burnaby, Canada, September 2, 1994, "Where
Should You Sit in the Cinema so That Your Favorite Actor is as Tall as
Possible?"
GINTIC Institute of Manufacturing Technology, Nanyang
Technological University, Singapore, July 11, 1994, "Geometric and Computational
Aspects of Manufacturing Processes."
Seminar, Department of Computer Science, National
University of Singapore July 12, 1994, "Where Should You Sit in the
Cinema so That Your Favorite Actor is as Tall as Possible?"
Seminar, Department of Computer Science, University
of Newcastle Australia, July 14, 1994, "Geometric and Computational
Aspects of Manufacturing Processes."
Seminar, Department of Computer Science, University
of Newcastle Australia, July 15, 1994, "A New Look at Euclid's Second
Proposition."
Seminar, Department of Mathematics, University of
Nevada at Reno, April 15, 1994, "A New Look at Euclid's Second Proposition."
Seminar, Department of Electrical Engineering, University
of Nevada at Reno, April 15, 1994, "Geometric and Computational Aspects
of Manufacturing Processes."
Seminar, Department of Computer Science, Howard R.
Hughes College of Engineering, University of Nevada at Las Vegas, April
13, 1994,
"Geometric and Computational Aspects of Manufacturing Processes."
1993
At Conferences:
National Science Foundation Regional Geometry Institute,
Smith College, Northampton, Massachussetts, July 12, 1993, "Triangulations
and Arrangements."
National Science Foundation Regional Geometry Institute,
Smith College, Northampton, Massachussetts, July 12, 1993, "Computational
Geometric Topics Suitable for High School."
National Science Foundation Regional Geometry Institute,
Smith College, Northampton, Massachussetts, July 13, 1993, "Separating
Objects with Translations."
National Science Foundation Regional Geometry Institute,
Smith College, Northampton, Massachussetts, July 14, 1993, "Triangulating
a Set of Line Segments."
National Science Foundation Regional Geometry Institute,
Smith College, Northampton, Massachussetts, July 14, 1993, "Computing
Geometric Properties of Arrangements of Lines and Line Segments."
IV Encuentro de Geometria Computacional, Granada,
Spain, June 1, 1993, "Aproximación Poligonal de Curvas en dos
y tres Dimensiones."
At Universities:
Mechanical Engineering Department, Ecole Politechnique,
University of Montreal, November 15, 1993, "Computational Geometric
Problems Related to Injection Molding."
Mathematics & Computer Science Colloquium, University
of Vermont, Burlington, Vermont, November 12, 1993, "Movable Separability
of Objects in Two and Three Dimensions."
Mathematics & Computer Science Seminar, Middlebury
College, Vermont, October 12, 1993, "Movable Separability of Objects
in Two and Three Dimensions."
Geometry Seminar, Department of Computer Science,
Utrecht University, June 29, 1993, "Geometric and Computational Aspects
of Injection Molding and Stereolithography."
Pattern Recognition Colloquium, Department of Physics,
Delft University of Technology, June 28, 1993, "Geometric and Computational
Aspects of Injection Molding and Stereolithography."
Department of Applied Mathematics II, Universidad
Politecnica de Catalunya, Barcelona, Spain, June 17, 1993, "Aspectos
Geometricos y Computacionales de la Inyección en Moldes y de la
Estereolitografia."
Department of Applied Mathematics, Universidad Politecnica
de Madrid, Spain, June 10, 1993, "Arreglos de Rectas."
Seminar, Faculty of Mathematics and Computer Science,
University of Amsterdam, May 28, 1993, "Approximating Polygonal Curves
in Two and Three Dimensions."
In Industry:
IBM Software Solutions Toronto Laboratory, The Centre
for Advanced Studies, North York, Ontario, December 10, 1993, "Geometric
and Computational Aspects of Manufacturing Processes."
Bell Northern Research, Nun's Island, Montreal, May
12, 1993,
"The Application of Proximity Graphs to Edited Nearest Neighbor
Decision Rules."
1992
At Conferences:
Canadian Conference on Electrical and Computer Engineering,
Toronto, Canada, September 14, 1992, "The Use of Proximity Graphs in
Image Analysis and Computer Vision."
Séptimo Coloquio de Teoría de las Gráficas,
Combinatoria y sus Aplicaciones, Universidad Autónoma de Zacatecas,
México, February 27, 1992, "Aplicación de la Teoría
de Gráficas a la Aproximación Poligonal de Curvas.
At Universities:
Seminar, Department of Mathematics, City University
of New York, York College, Jamaica, N.Y., September 25, 1992, "Separability
of Sets of Objects in Two and Three Dimensions."
Seminar, Department of Computer Science, York University,
North York, Ontario, September 15, 1992, "Separability of Sets of Objects
in Two and Three Dimensions."
Colloquium, Department of Mathematics and Computer
Science, University of Tulsa, Okla., July 14, 1992, "Separability of
Sets of Objects in Two and Three Dimensions."
The Guillermo Torres Seminar on Topology and Geometry,
Institute of Mathematics, Universidad Nacional Autónoma de México,
México City, June 25, 1992, "Separabilidad de Objetos Mediante
Translaciones en dos y tres Dimensiones."
Research Seminar, Department of Applied Mathematics
II, Universidad Politecnica de Catalunya, Barcelona, June 8, 1992, "Open
Problems in Computational Geometry."
Seminar on Software Mathematics and Computational
Mathematics, Department of Applied Mathematics II, Universidad Politecnica
de Catalunya, Barcelona, June 5, 1992, "Separabilidad de Objetos Mediante
Movimientos en el Plano y el Espacio Tridimensional."
Colloquium, Department of Mathematics, Universidad
Politecnica de Madrid, June 4, 1992, "Separabilidad de Objetos Mediante
Movimientos en el Plano y el Espacio Tridimensional."
Research Seminar, Department of Mathematics, Universidad
Politecnica de Madrid, June 3, 1992, "Computational Geometry at McGill
University."
Colloquium, Department of Mathematics and Computer
Science, University of Quebec in Montreal, May 7, 1992, "Movable Separability
of Sets in Two and Three Dimensions."
Mathematics Colloquium, Departments of Mathematics,
Statistics, Computer Science and Electrical Engineering, University of
Vermont, Burlington, Vermont, USA, April 10, 1992, "A New Look at Euclid's
Second Proposition."
Seminar, McGill Research Center for Intelligent Machines,
McGill University, Montreal, Canada, January 29, 1992, "Movable Separability
of Objects in Two and Three Dimensions."
Seminar, McGill Research Center for Intelligent Machines,
McGill University, Montreal, Canada, January 22, 1992, "The Use of Proximity
Graphs in Pattern Recognition."
In Industry:
I.B.M. Thomas J. Watson Research Center, Yorktown
Heights, N.Y., May 29, 1992, "Computing Geometric Properties of Arrangements
of Lines and Line Segments."
1991
At Conferences:
2nd Japan International Symposium of the Society
for the Advancement of Materials and Process Engineering, Chiba, Japan,
December 14, 1991, "Computing Morphological Properties of Arrangements
of Lines."
The Fifth Annual Computer Science Days `91, Memorial
University of Newfoundland, St. John's, Newfoundland, October 17-18, 1991,
"Computing
Shortest Transversals of Sets."
IEEE Computer Society Conference on Computer Vision
& Pattern Recognition, Lahaina, Maui, Hawaii, June 3-6, 1991, "Computational
Geometry and Computer Vision."
Sexto Coloquio de Teoría de las Gráficas,
Combinatoria y sus Aplicaciones, Guanajuato, México, March 4-8,
1991, "Calculo de Propiedades Geometricas de Arreglos de Líneas."
At Universities:
Computer Science Seminar, Division of Computer Science,
Asian Institute of Technology, Bangkok, Thailand, January 8, 1991, "Polygonal
Approximation of Curves and Applications."
Information Science Seminar, Institute of Information
Science, Academia Sinica, Taipei, Taiwan, Republic of China, December 19,
1991,
"Computing Shortest Transversals of Sets."
Seminar, Ottawa-Carleton Institute for Computer Science,
Carleton University, November 7, 1991, "Computing Geometrical Properties
of Arrangements of Lines."
Séminaire en Informatique, Département
d'Informatique, Université du Québec at Hull, November 6,
1991, "Computing Geometrical Properties of Arrangements of Lines."
Seminar on the History and Philosophy of Science,
Department of Psychology, McGill University, September 30, 1991, "The
Role of Visual and Kinesthetic Thinking in Geometry."
Distinguished Seminar Series, Sesquicentennial Anniversary
of Queens University, Department of Computing and Information Science,
Kingston, Ontario, April 18, 1991, "A New Look at Euclid's Second Proposition."
Distinguished Lecture Series, 225th Anniversary of
Rutgers University, Computer Science Department Colloquium, New Brunswick,
New Jersey, April 1st, 1991, "Computing Shortest Transversals of Sets."
Colloquium, University of Waterloo, Department of
Computer Science, Waterloo, March 22, 1991, "Computing Shortest Transversals
of Sets."
C & O Seminar, University of Waterloo, Department
of Combinatorics and Optimization, Waterloo, March 21, 1991, "A New
Look at Euclid's Second Proposition."
Colloquium, University of Nevada at Las Vegas, Department
of Computer Science, January 28, 1991, "Computing Shortest Transversals
of Sets."
1990
At Conferences:
Workshop on the Foundation of Computer Graphics,
Asian Institute of Technology, Bangkok, Thailand, December 6-20, 1990,
"Computational
Geometric Aspects of Visibility."
The 3rd Tokyo Algorithms Day, University of Tokyo,
December 3, 1990, "Computing Geometric Properties of Line Arrangements."
Fifteenth Computational Geometry Day, Courant Institute
of Mathematical Sciences, New York University, New York, November 9, 1990,
"Computing
Extremal Transversals of Sets."
2nd Canadian Conference on Computational Geometry,
University of Ottawa, August 6, 1990, "Computing Geometric Properties
of Arrangements."
Computer Graphics International'90, Singapore, June
26, 1990,
"Computational Geometric Aspects of Illumination and Visibility."
Third Cumberland Conference on Graph Theory and Applications
to Computer Science, University of Louisville, Kentucky, May 17-19, 1990,
"Graph
theory, Computational Geometry, & Morphology."
V Coloquio de Teoría de las Gráficas,
Combinatoria y sus Aplicaciones, Universidad Michoacana de San Nicolas
de Hidalgo, Casa de la Cultura, Morelia, México, March 2nd, 1990,
"Gráficas
de Proximidad en Problemas de Visión Computacional."
V Coloquio de Teoría de las Gráficas,
Combinatoria y sus Aplicaciones, Universidad Michoacana de San Nicolas
de Hidalgo, Casa de la Cultura, Morelia, México, February 27, 1990,
"Triangulacion
de Poligonos."
At Universities:
Colloquium, Simon Fraser University, Department of
Computer Science, Burnaby, November 30, 1990, "A New Look at Euclid's
Second Proposition."
Colloquium, Simon Fraser University, Department of
Computer Science, Burnaby, June 1, 1990, "Computing Geometric Properties
of Arrangements.
In Industry:
Nippon Telegraph and Telephone Corporation, Autonomous
Robot Systems Laboratory, Tokyo, December 5, 1990, "Computational Geometric
Aspects of Visibility."
1989
At Conferences:
First Workshop on Proximity Graphs, New Mexico State
University, December 2, 1989, "Some unsolved problems on proximity graphs."
First Workshop on Proximity Graphs, New Mexico State
University, Las Cruces, December 2, 1989, "Proximity graphs in computer
vision."
Seventh International Conference of the Computer
Graphics Society, University of Leeds, United Kingdom, June 27-30,
1989, "Computational geometry: Recent developments".
Meeting of the American Mathematical Society, Stevens
Institute of Technology, Hoboken, New Jersey, October 22, 1989, "Computational
geometry and computer vision."
At Universities:
Colloquium, Ohio State University, Department of
Computer and Information Science, Columbus, November 2, 1989, "Computing
Minimal Spanning Covers of Sets."
Colloquium, University of Amsterdam, Department of
Computer Science, Amsterdam, July 6, 1989, "Determining Weak External
Visibility of a Polygon."
Colloquium, University of Amsterdam, Department of
Computer Science, Amsterdam, July 6, 1989, "Computing Geodesic Properties
of Polygons."
Colloquium, University of Amsterdam, Department of
Computer Science, Amsterdam, June 22, 1989, "A Hierarchy of Polygons
That Admit Linear-Time Triangulation."
Colloquium, University of Amsterdam, Department of
Computer Science, Amsterdam, June 22, 1989, "An Output-Complexity-Sensitive
Polygon Triangulation Algorithm."
Colloquium, University of Amsterdam, Department of
Computer Science, Amsterdam, June 15, 1989, "Separating Two Simple Polygons
by a Single Translation."
Colloquium, University of Amsterdam, Department of
Computer Science, Amsterdam, June 1, 1989, "Determining Edge-to-Edge
Visibility in a Polygon."
Colloquium, University of Amsterdam, Department of
Computer Science, Amsterdam, June 1, 1989, "Computing Distances Between
Sets."
Colloquium, University of Amsterdam, Department of
Computer Science, Amsterdam, May 25, 1989, "Computing the Convex Hull
of a Set."
Colloquium, University of Amsterdam, Department of
Computer Science, Amsterdam, May 25, 1989, "Computing the Diameter of
a Set."
Colloquium, University of West Indies, Department
of Mathematics, Cave Hill, Barbados, February 22, 1989, "A Hierarchy
of Polygons That can be Triangulated in Linear Time"
Colloquium, University of West Indies, Department
of Mathematics, Cave Hill, Barbados, February 15, 1989, "An Output-Complexity
Sensitive Polygon Triangulation Algorithm."
1988
At Universities:
Colloquium, Algorithms Group Seminar, Simon Fraser
University, School of Computing Science, Burnaby, November 25, 1988,
"On Determining the Weak Visibility of a Polyhedral Terrain From a Line."
Colloquium, University of Washington, Department
of Computer Science, Seattle, October 19, 1988, "On Triangulating Simple
Polygons."
Colloquium, University of British Columbia, Department
of Computer Science, Vancouver, September 29, 1988, "On Triangulating
Simple Polygons."
Colloquium, University of Victoria, Computer Science
Department, Victoria, September 16, 1988, "On Triangulating Simple Polygons."
DARTS Lecture (Distinguished Advanced Research and
Technology Seminar) Simon Fraser University, School of Engineering Science,
Burnaby, September 15, 1988, "Computational Geometry and Robotics."
Colloquium, Simon Fraser University, School of Computing
Science, Burnaby, August 10, 1988, "On Triangulating Simple Polygons."
In Industry:
MacDonald, Dettwiler & Associates, Richmond,
B.C., November 9, 1988, "Computational Geometry and Geographic Information
Systems."
1987
At Conferences:
13th IFIP Conference on System Modelling and Optimization,
Tokyo, Japan, Sept.1st., 1987, "Relative Convex Hulls of Sets and their
Applications."
Workshop on Computational Geometry and Discrete Algorithms,
Osaka Electro-Communication University, Osaka, Japan, Sept. 5, 1987, "Relative
Convex Hulls of Sets and their Applications."
At Universities:
University of Tokyo, Computer Science Department
(c/o Prof. Kunii), Sept. 3, 1987, "Relative Convex Hulls of Sets and
their Applications."
Simon Fraser University, Computer Science Department,
Vancouver, August 28, 1987, "Relative Convex Hulls of Sets and their
Applications."
Carleton University, School of Computer Science,
Ottawa, October 30, 1987, "Relative Convex Hulls of Sets and their Applications."
1985
At Universities:
Computer Science Seminar, Carleton University, Ottawa,
Canada, February 28, 1985, "Some Collision Avoidance Problems in the
Plane."
1984
At Conferences:
Computer Science and Statistics: 16th Symposium on
the Interface, Atlanta, U.S.A., March 1984, G.T. Toussaint, B.K. Bhattacharya,
and R.S. Poulsen, "The Application of Voronoi Diagrams to Nonparametric
Decision Rules."
At Universities:
Computer Science Colloquium, University of Maryland,
College Park, U.S.A., April 26, 1984, "Some Collision Avoidance Problems
in the Plane."
1983
At Conferences:
IEEE International Symposium on Information Theory,
St. Jovite, Canada, September, 1983, "The Complexity of Movement."
IEEE International Symposium on Information Theory,
St. Jovite, Canada, September, 1983, G.T. Toussaint, and B.K. Bhattacharya,
"On
Geometric Algorithms That use the Furthest Point Voronoi Diagram."
At Universities:
Computer Science Colloquium, Kyoto University, Kyoto,
Japan, December 26, 1983, "Some Collision Avoidance Problems in the
Plane."
Electrical, Engineering Colloquium, University of
Nagoya, Japan, December 29, 1983, "Some Collision Avoidance Problems
in the Plane."
Mathematical Engineering Colloquium, University of
Tokyo, Japan, December 16, 1983, "Some Collision Avoidance Problems
in the Plane."
Computer Science Colloquium, Concordia University,
Montreal November 1983, "Some Collision Avoidance Problems in the Plane."
Systems Science Colloquium, University of Toronto,
February 1983, "Recent Results in Computational Geometry."
In Industry:
Hitachi Central Research Laboratory, Tokyo, Japan,
December 22, 1983, "Some Collision Avoidance Problems in the Plane."
1982
At Conferences:
86th Summer Meeting of the American Mathematical
Society, August 21-26, 1982, Toronto, "Distance and visibility problems
in computational geometry."
At Universities:
Psychology Colloquium, Carleton University, Ottawa,
October 18, 1982, "The Computation and Perception of Shapes."
Mathematics Colloquium, University of Genova, Italy,
June 1982, "Efficient Algorithms for Computing Distances Between Sets."
Computer Science Colloquium, University of Torino,
Italy, June 1982, "Efficient Algorithms for Computing Distances Between
Sets."
In Industry:
Bell Northern Research, Nun's Island, Verdun, October
29, 1982, "Graph-theoretic Methods for Edited Nearest Neighbor Decision
Rules,"
1981
At Conferences:
NATO Avanced Study Institute on Pattern Recognition
Theory and Practice, Oxford University, April 1981, "Computational Geometric
Problems in Pattern Recognition."
At Universities:
Colloquia Estria, Département de Mathématiques
et d'informatique, Université de Sherbrooke, 26 mars, 1981, "Problèmes
en Géométrie Algorithmique,"
Computer Science Seminar, University of British Columbia,
Vancouver, Feb. 6, 1981, "Pattern Recognition and Geometrical Complexity."
In the Comminuty:
Herzliah High School, invited speaker at the awards-ceremonies
of the First Montreal High-School Computer Programming Competition, May
3, 1981, "Computer Applications in Artificial Intelligence."
1980
At Conferences:
Fifth International Conference on Pattern Recognition,
Miami, December 1980, "Pattern Recognition and Geometrical Complexity."
At Universities:
Computing and Information Science Seminar, Queen's
University, Kingston, Ontario, November 5, 1980, "Pattern Recognition
and Geometrical Complexity."
Computing and Information Science Seminar, Queen's
University, Kingston, Ontario, March 26, 1980, "The Relative Neighborhood
Graph of a Finite Planar Set."
1979
At Universities:
Séminaire d'Informatique Heuristique, Université
de Paris, (Pierre et Marie Curie), June 11, 1979, "Pattern Recognition
and Geometrical Complexity: Placing an Elastic Band Around a Group of Pegs."
Systems Theory Seminar, University of Louvain (La
Neuve), Belgium, June 8, 1979, "Pattern Recognition and Geometrical
Complexity: Placing an Elastic Band Around a Group of Pegs."
Electrical Engineering Seminar, Delft University
of Technology, The Netherlands, June 5, 1979, "Using Contextual Information
to Improve the Performance of Character Recognition Machines."
Department of Applied Physics Seminar, Delft University
of Technology, The Netherlands, June 1, 1979, "Pattern Recognition and
Geometrical Complexity: Placing an Elastic Band Around a Group of Pegs."
1978
At Universities:
Computer Science Colloquium, University of Connecticut,
October 13, 1978, "The Convex Hull as a Tool in Pattern Recognition."
Computing Center and Computer Science Colloquium,
State University of New York at Buffalo, October 6, 1978, "The Convex
Hull as a Tool in Pattern Recognition."
1977
At Conferences:
IEEE Conference on Pattern Recognition and Image
Processing, June 1977, Troy, N.Y., "The Use of Context in Pattern Recognition."
1976
At Universities:
University of Montreal, April 1st, 1976, "Using
Contextual Information to Improve the Performance of Character Recognition
Machines."
1975
At Universities:
Clarkson College of Technology, December 4, 1975,
"Using
Contextual Information to Improve the Performance of Character Recognition
Machines."
Department of Electrical Engineering, McGill University,
March 13, 1975, "The Use of Statistical Language Constraints in Machine
Recognition of Hand Printed English Text."
1974
At Conferences:
Conference on Measures of Information and their Application,
August 1974, Bombay, India, "On Some Measures of Information and their
Application to Pattern Recognition."
Second International Joint Conference on Pattern
Recognition, August 1974, Copenhagen, Denmark, "Recent Progress in Statistical
Methods Applied to Pattern Recognition."
At Universities:
Computer Science Department, Simon Fraser University,
Spring, 1974, "The Use of Statistical Language Constraints to Improve
the Performance of Character Recognition Machines."
1973
At Universities:
Département d'Informatique, Université
de Montreal, Spring, 1973, "Distance Measures as Measures of Certainty
and Their Application to Pattern Recognition."