 | Clifford A. ShafferProfessor
|
Research Interests
Clifford A. Shaffer is a professor in the Department of
Computer Science at Virginia Tech. His research interests include
Problem Solving Environments, Bioinformatics, Algorithm Visualization,
Digital Education, Visualization, Hierarchical Data Structures,
Geographic Information Systems, Computer Graphics, Algorithm Design
and Analysis, Data Structures. Dr. Shaffer received his PhD from
University of Maryland, College Park.
He is a senior member of the ACM, senior member of the IEEE Computer
Society, and member of the American Society for Engineering Education.
He serves on the editorial boards for AACE Journal of Interactive
Learning Research, AACE Journal of Computers in Mathematics and
Science Teaching, and International Journal of Computational Science.
Algorithm Visualization Research Group
URL: http://algoviz.cs.vt.edu
Contact: Clifford Shaffer
The Algorithm Visualization Research Group seeks to understand all aspects of algorithm visualization as it applies to supporting the understanding of algorithms for teaching and research. Primary activities include support for an emerging community of users and developers of Algorithm Visualizations (AVs) through the AlgoViz Wiki (algoviz.cs.vt.edu); development of exemplary AVs (research.cs.vt.edu/algoviz/), and pedagogical research aimed at a deep understanding of how to make Algorithm Visualization successful in teaching and learning.
Laboratory for Advanced Scientific Computing and Applications
URL: http://research.cs.vt.edu/~lasca/
Contact: Layne Watson
The goal of the Laboratory for Advanced Scientific Computing and Applications (LASCA) is to provide expertise and leadership in high-end scientific computing research and education at Virginia Tech. Located in Torgersen Hall, the laboratory is a visible and strategic center of activity in applied high-computation and assist scientists and engineers in applying high-end computing resources to their problems. By bringing together experts in scientific cp\omputing and its applications, LASCA helps build the kind of multidisciplinary teams needed to address today's most challenging computational science problems.
2008
Wang P., Randhawa R., Shaffer C.A., Cao Y., Baumann W.T.,
"Converting Macromolecular Regulatory Models from Deterministic to Stochastic Formulation",
Proceedings of High Performance Computing and Simulation 2008 (HPCS 2008), pp. 385–392, April, 2008.
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Panning T.D., Watson L.T., Allen N.A., Chen K.C., Shaffer C.A., Tyson J.J.,
"Deterministic parallel global parameter estimation for a model of the budding yeast cell cycle",
J. of Global Optimization, vol. 40, no. 4, Hingham, MA, USA, Kluwer Academic Publishers, pp. 719–738, 2008.
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Wang P., Randhawa R., Sha er C., Cao Y., Baumann W.,
"Converting Macromolecular Regulatory Models from Deterministic to Stochastic Formulation",
High Performance Computing and Simulation Symposium (HPCS 2008), 2008.
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2007
Thomas L., Shaffer C A., Mili L., Thomas E.,
"Automated Detection of Severe Surface Defects on Barked Hardwood Logs",
Forest Product Journal, vol. 57, no. 4, pp. 50–56, April, 2007.
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Thomas E., Thomas L., Shaffer C A.,
"Defect detection on hardwood logs using high resolution laser scan data",
Proceedings of the 15th International Symposium on Non-Distructive Testing of Wood, August, 2007.
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Randhawa R., Shaffer C A., Tyson J J.,
"Fusing and Composing Macromolecular Regulatory Network Models",
Proceedings of the 2007 High Performance Computing Symposium (HPC 2007), pp. 337–344, March, 2007.
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Mishra D., Shaffer C.A., Ramakrishnan N., Watson L.T., Bae K.K., He J., Verstak A.A., Tranter W.H.,
"S4W: a problem-solving environment for wireless system design",
Softw. Pract. Exper., vol. 37, no. 14, New York, NY, USA, John Wiley & Sons, Inc., pp. 1539–1558, 2007.
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Panning T.D., Watson L.T., Shaffer C.A., Tyson J.J.,
"A Mathematical Programming Formulation for the Budding Yeast Cell Cycle",
Simulation, vol. 83, no. 7, San Diego, CA, USA, Society for Computer Simulation International, pp. 497–514, 2007.
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Shaffer C.A., Cooper M., Edwards S.H.,
"Algorithm visualization: a report on the state of the field",
SIGCSE '07: Proceedings of the 38th SIGCSE technical symposium on Computer science education, New York, NY, USA, ACM, pp. 150–154, 2007.
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2006
Panning T D., Watson L T., Allen N A., Shaffer C A., Tyson J J.,
"Deterministic Global Parameter Estimation for a Budding Yeast Model",
Proceedings of the 2006 High Performance Computing Symposium (HPC'06), pp. 195–201, 2006.
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Allen N A., Chen K C., Shaffer C A., Tyson J J., Watson L T.,
IEE Proceedings – Systems Biology,
, vol. 153, no. 1, pp. 13–21, January, 2006.
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Thomas E., Thomas L., Shaffer C A., Mili L.,
"Using External High-Resolution Log Scanning to Determine Internal Defect Characteristics",
Proceedings of the 15th Central Hardwood Forestry Conference, pp. 497–505, February, 2006.
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Thomas L., Mili L., Thomas E., Shaffer C A.,
Wood and Fiber Science,
, vol. 38, no. 4, pp. 682–695, October, 2006.
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Vass M., Shaffer C A., Ramakrishnan N., Watson L T., Tyson J J.,
"The JigCell Model Builder: A Spreadsheet Interface for Creating Biochemical Reaction Network Models",
IEEE/ACM Transactions on Computational Biology and Bioinformatics, vol. Vol. 3, no. 2, pp. 155–164, April-June, 2006.
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Vass M.T., Shaffer C.A., Ramakrishnan N., Watson L.T., Tyson J.J.,
"The JigCell Model Builder: A Spreadsheet Interface for Creating Biochemical Reaction Network Models",
IEEE/ACM Trans. Comput. Biol. Bioinformatics, vol. 3, no. 2, Los Alamitos, CA, USA, IEEE Computer Society Press, pp. 155–164, 2006.
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Shaffer C.A.,
"Experiences teaching a graduate research methods course",
SIGCSE Bull., vol. 38, no. 2, New York, NY, USA, ACM, pp. 97–101, 2006.
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Shaffer C.A., Randhawa R., Tyson J.J.,
"The role of composition and aggregation in modeling macromolecular regulatory networks",
WSC '06: Proceedings of the 38th conference on Winter simulation: Winter Simulation Conference, pp. 1628–1636, 2006.
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2005
Allen N.A., Shaffer C.A., Watson L.T.,
"Building modeling tools that support verification, validation, and testing for the domain expert",
WSC '05: Proceedings of the 37th conference on Winter simulation: Winter Simulation Conference, pp. 419–426, 2005.
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2004
He J., Sosonkina M., Shaffer C A., Tyson J J., Watson L T., Zwolak J W., Meyer J.,
"A Hierarchical Parallel Scheme for a Global Search Algorithm",
Proceedings of the 2004 High Performance Computing Symposium (HPC'04): Society for Modeling and Simulation International, pp. 43–50, 2004.
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Thomas L., Mili L., Shaffer C A., Thomas E.,
"Defect Detection on Hardwood Logs Using High Resolution Three-dimensional Laser Scan Data",
IEEE International Conference on Image Processing, ICIP, pp. 243–246, October, 2004.
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He J., Verstak A., Watson L T., Stinson C A., Ramakrishnan N., Shaffer C A., Rappaport T S., Anderson C R., Bae K., Jiang J., Tranter W H.,
"Globally Optimal Transmitter Placement for Indoor Wireless Communication Systems",
IEEE Transactions on Wireless Communications, vol. 3, no. 6, pp. 1906–1911, November, 2004.
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Vass M., Allen N., Shaffer C.A., Ramakrishnan N., Watson L.T., Tyson J.J.,
"The JigCell Model Builder and Run Manager",
Bioinformatics, vol. 20, no. 18, Oxford, UK, Oxford University Press, pp. 3680–3681, 2004.
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Skidmore R.R., Verstak A., Ramakrishnan N., Rappaport T.S., Watson L.T., He J., Varadarajan S., Shaffer C.A., Chen J., Bae K., Jiang J., Tranter W.H.,
"Towards integrated PSEs for wireless communications: experiences with the S4W and SitePlanner\textregistered projects",
SIGMOBILE Mob. Comput. Commun. Rev., vol. 8, no. 2, New York, NY, USA, ACM, pp. 20–34, 2004.
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Shaffer C.A.,
"Buffer pools and file processing projects for an undergraduate data structures course",
SIGCSE '04: Proceedings of the 35th SIGCSE technical symposium on Computer science education, New York, NY, USA, ACM, pp. 175–178, 2004.
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Saraiya P., Shaffer C.A., McCrickard S.D., North C.,
"Effective features of algorithm visualizations",
Proceedings of the 35th SIGCSE technical symposium on Computer Science Education, pp. 382 - 386, March , 2004.
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2003
Allen N.A., Shaffer C.A., Vass M.T., Ramakrishnan N., Watson L.T.,
"Next generation modeling II - applications: improving the development process for eukaryotic cell cycle models with a modeling support environment",
WSC '03: Proceedings of the 35th conference on Winter simulation: Winter Simulation Conference, pp. 782–790, 2003.
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Rubin E J., Shaffer C A., Ramakrishnan N., Watson L T., Dymond R., Kibler D., Dietz R., Chanat J., Lohani V., Bosch D., Speir C.,
"From Landscapes to Waterscapes: A PSE for Landuse Change Analysis",
Engineering with Computers, vol. 19, no. 1, pp. 9–25, July, 2003.
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Allen N A., Shaffer C A., Vass M T., Ramakrishnan N., Watson L T.,
"Improving the Development Process for Eukaryotic Cell Cycle Models with a Modeling support environment",
Simulation, vol. 79, no. 12, pp. 674–688, December, 2003.
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Allen N., Calzone L., Chen K C., Ciliberto A., Ramakrishnan N., Shaffer C A., Sible J C., Tyson J J., Vass M., Watson L T., Zwolak J.,
"Modeling Regulatory Networks at Virginia Tech",
Omics Journal of Integrative Biology, vol. Vol. 7, no. 3, pp. pages 285–300, Fall, 2003.
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Verstak A., Ramakrishnan N., Watson L.T., He J., Shaffer C.A., Bae K., Jiang J., Tranter W.H., Rappaport T.S.,
"BSML: A binding schema markup language for data interchange in problem solving environments",
Sci. Program., vol. 11, no. 3, Amsterdam, The Netherlands, The Netherlands, IOS Press, pp. 199–224, 2003.
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Su Y., Murali T M., Pavlovic V., Schaffer M., Kasif S.,
"RankGene: identification of diagnostic genes based on expression data.",
Bioinformatics, vol. 19, no. 12, pp. 1578–9, 2003.
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2002
Watson L T., Lohani V K., Kibler D F., Dymond R L., Ramakrishnan N., Shaffer C A.,
"Integrated Computing Environments for Watershed Management",
ASCE Journal of Computing in Civil Engineering, vol. 16, no. 4, pp. 259–268, October, 2002.
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Ramakrishnan N., Watson L T., Kafura D G., Ribbens C.J., Shaffer C A.,
"Programming Environments for Multidisciplinary Grid Communities",
Concurrency and Computation: Practice and Experience, vol. 13–15, pp. 1241–1273, Nov–December, 2002.
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Colaso V., Kamal A., Saraiya P., North C., McCrickard S., Shaffer C.A.,
"Learning and Retention in Data Structures: A Comparison of Visualization, Text, and Combined Methods",
Proc. ED-MEDIA 2002, pp. 2, 2002.
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Vass M., Carroll J.M., Shaffer C.A.,
"Supporting creativity in problem solving environments",
C&C '02: Proceedings of the 4th conference on Creativity & cognition, New York, NY, USA, ACM, pp. 31–37, 2002.
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He J., Watson L.T., Ramakrishnan N., Shaffer C.A., Verstak A., Jiang J., Bae K., Tranter W.H.,
"Dynamic Data Structures for a Direct Search Algorithm",
Comput. Optim. Appl., vol. 23, no. 1, Norwell, MA, USA, Kluwer Academic Publishers, pp. 5–25, 2002.
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2001
Goel A., Baker C.A., Shaffer C.A., Grossman B., Watson L.T., Haftka R.T., Mason W.H.,
"VizCraft: a problem-solving environment for aircraft configuration design",
Comput. Sci. Eng., vol. 3, no. 1, Washington, DC, USA, IEEE Computer Society, pp. 56–66, 2001.
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Zaffer A A., Shaffer C A., Ehrich R W., Perez M.,
NetEdit: A Collaborative Editor,
, 2001.
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Shaffer C.A.,
A Practical Introduction to Data Structures and Algorithm Analysis,
, Second, Upper Saddle River, NJ, USA, Prentice Hall PTR, 2001.
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Begole J., Smith R.B., Struble C.A., Shaffer C.A.,
"Resource sharing for replicated synchronous groupware",
IEEE/ACM Trans. Netw., vol. 9, no. 6, Piscataway, NJ, USA, IEEE Press, pp. 833–843, 2001.
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2000
Shaffer C A., Watson L T., Kafura D G., Ramakrishnan N., Tentner A.,
"Features of Problem Solving Environments for Computational Science",
Proceedings of the 2000 High Performance Computing Symposium (HPC'00): Society for Computer Simulation International, pp. 242–247, 2000.
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Goel A., Phanouriou C., Kamke F A., Ribbens C.J., Shaffer C A., Watson L T.,
"WBCSim: A prototype PSE for wood-based composites simulations",
Enabling Technologies for Computational Science: Frameworks, Middleware and Environments, pp. 187-196, 2000.
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1999
Edwards S H., Shaffer C A.,
"An Analysis of a Course-Oriented Electronic Mailing List",
Computer Science Education, vol. 9, no. 1, pp. 8–22, April, 1999.
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Begole J., Isenhour P L., Shaffer C A.,
"Can You Share JavaBeans?",
Dr. Dobb's Journal, no. 300, pp. 121–122, June, 1999.
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Shaffer C A., Watson L T., Kafura D G.,
"Component Frameworks for Problem Solving Environments in Computational Science",
Proceedings of the 1st Symposium on Reusable Architectures and Components for Developing Distributed Information Systems (RACDIS'99), pp. 653–656, August, 1999.
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Goel A., Baker C., Shaffer C A., Grossman B., Haftka R., Mason W., Watson L.,
"VizCraft: A Multidimensional Visualization Tool for Aircraft Configuration Design",
VISUALIZATION '99: Proceedings of the 10th IEEE Visualization 1999 Conference (VIS '99), Washington, DC, USA, IEEE Computer Society, 1999.
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Goel A., Phanouriou C., Kamke F A., Ribbens C.J., Shaffer C A., Watson L T.,
"WBCSim: A Prototype Problem Solving Environment for Wood-Based Composites Simulations",
Engineering with Computers, vol. 15, no. 2, pp. 198–210, 1999.
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Begole J., Rosson M., Shaffer C.A.,
"Flexible collaboration transparency: supporting worker independence in replicated application-sharing systems",
ACM Trans. Comput.-Hum. Interact., vol. 6, no. 2, New York, NY, USA, ACM, pp. 95–132, 1999.
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1998
Begole J., Rosson M., Shaffer C.A.,
"Supporting worker independence in collaboration transparency",
UIST '98: Proceedings of the 11th annual ACM symposium on User interface software and technology, New York, NY, USA, ACM, pp. 133–142, 1998.
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Goel A., Phanouriou C., Kamke F A., Ribbens C J., Shaffer C A., Watson L T.,
WBCSim: A Prototype Problem Solving Environment for Wood-Based Composites Simulations,
, Blacksburg, VA, USA, Virginia Polytechnic Institute && State University, 1998.
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Begole J., Shaffer C.A.,
Flexible Collaboration Transparency,
, Blacksburg, VA, USA, Virginia Polytechnic Institute && State University, 1998.
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Shaffer C.A.,
A practical introduction to data structures and algorithms analysis, Java edition,
, Upper Saddle River, NJ, USA, Prentice-Hall, Inc., 1998.
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Koenemann J., Carroll J.M., Shaffer C.A., Rosson M., Abrams M.,
Designing collaborative applications for classroom use: the LiNC project,
, San Francisco, CA, USA, Morgan Kaufmann Publishers Inc., pp. 99–122, 1998.
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Shaffer C.A., Knill D.L., Watson L.T.,
"Visualization for multiparameter aircraft designs",
VIS '98: Proceedings of the conference on Visualization '98, Los Alamitos, CA, USA, IEEE Computer Society Press, pp. 491–494, 1998.
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1997
Shaffer C.A.,
A practical introduction to data structures and algorithm analysis,
, Upper Saddle River, NJ, USA, Prentice-Hall, Inc., 1997.
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Begole J., Struble C.A., Shaffer C.A., Smith R.B.,
"Transparent sharing of Java applets: a replicated approach",
UIST '97: Proceedings of the 10th annual ACM symposium on User interface software and technology, New York, NY, USA, ACM, pp. 55–64, 1997.
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Begole J., Struble C.A., Shaffer C.A.,
"Leveraging Java Applets: Toward Collaboration Transparency in Java",
IEEE Internet Computing, vol. 1, no. 2, Piscataway, NJ, USA, IEEE Educational Activities Department, pp. 57–64, 1997.
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1996
Shaffer C.A., Heath L.S., Yang J.,
"Using the Swan data structure visualization system for computer science education",
SIGCSE '96: Proceedings of the twenty-seventh SIGCSE technical symposium on Computer science education, New York, NY, USA, ACM, pp. 140–144, 1996.
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Yang J., Shaffer C.A., Heath L.S.,
"SWAN: A Data Structure Visualization System",
GD '95: Proceedings of the Symposium on Graph Drawing, London, UK, Springer-Verlag, pp. 520–523, 1996.
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Shaffer C A., Heath L S., Nielsen J M., Yang J.,
"SWAN: A Student-Controllable Data Structure Visualization System",
Proceedings of ED-MEDIA 96, pp. 632–637, June, 1996.
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1995
Fox E A., Barnette N D., Shaffer C A., Heath L., Wake W., Nowell L T., Lee J A N., Hix D., Hartson H R.,
"Progress in Interactive Learning with a Digital Library in Computer Science",
Proceedings ED-MEDIA 95, World Conf. on Educational Multimedia and Hypermedia, June, 1995.
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Jun Y., Shaffer C.A., Heath L.S.,
The Swan User''s Manual, Version 1.1,
, Blacksburg, VA, USA, Virginia Polytechnic Institute && State University, 1995.
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1994
Bright J S., Shaffer C A., Nagarkatti P S., Nagarkatti M.,
"Computer Simulation of the Immune System",
Proceedings of the Fourteenth Annual Seminar of Cancer Researchers in Virginia, pp. {17}., March, 1994.
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Shaffer C A., Begole J M A., L.W. Carstensen J., Morrill R W., Fox E A.,
"GeoSim: A GIS-Based Simulation Laboratory for Introductory Geography",
Proceedings of the 1994 ADCIS Conference, February, 1994.
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Hines D.T., Begole J.M A., Klipsch C.A., Shaffer C.A.,
The GeoSim Interface Library (GIL): Programmer''s Manual, Version 1.0.1,
, Blacksburg, VA, USA, Virginia Polytechnic Institute && State University, 1994.
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Pemmaraju S.V., Shaffer C.A.,
"Analysis of the worst case space complexity of a PR quadtree",
Inf. Process. Lett., vol. 49, no. 5, Amsterdam, The Netherlands, The Netherlands, Elsevier North-Holland, Inc., pp. 263–267, 1994.
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1993
Shaffer C A., Juvvadi R., Heath L S.,
"A Generalized Comparison of Quadtree and Bintree Storage Requirements",
Image and Vision Computing, vol. 11, no. 7, pp. 402–412, September, 1993.
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L.W. Carstensen J., Shaffer C A., Morrill R W., Fox E A.,
"GeoSim: A GIS-Based Simulation Laboratory for Introductory Geography",
Journal of Geography, vol. 92, no. 5, pp. 217–222, September/Octobe, 1993.
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Shaffer C.A.,
"Dissertation Abstracts in Computer Graphics",
SIGGRAPH Comput. Graph., vol. 27, no. 2, New York, NY, USA, ACM, pp. 86–98, 1993.
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Shaffer C.A., Brown P.R.,
"A Paging Scheme for Pointer-Based Quadtrees",
SSD '93: Proceedings of the Third International Symposium on Advances in Spatial Databases, London, UK, Springer-Verlag, pp. 89–104, 1993.
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Shankar J., Ribbens C.J., Haftka R T., Watson L T.,
"Computational study of a nonhierarchical decomposition algorithm",
Comput. Optim. Appl., vol. 2, pp. 273–293, 1993.
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1992
Shaffer C A., Herb G M.,
"A Real-Time Robot Arm Collision Avoidance System",
IEEE Transactions on Robotics, vol. 8, no. 2, pp. 149–160, 1992.
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Shaffer C A.,
Data representations for Geographic Information Systems,
, vol. 27, Medford, NJ, American Society for Information Science, pp. 135–172, 1992.
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Shaffer C A.,
"Dissertation Abstracts in Computer Graphics",
SIGGRAPH Comput. Graph., vol. 26, no. 1, pp. 76–96, January, 1992.
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Shaffer C A., Ursekar M T.,
"Large Scale Editing and Vector to Raster Conversion Via Quadtree Spatial Indexing",
Proceedings of the 5th International Symposium on Spatial Data Handling, pp. 505–513, August, 1992.
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Shaffer C.A., Feustel C.D.,
Exact computation of 2–D intersections,
, San Diego, CA, USA, Academic Press Professional, Inc., pp. 188–192, 1992.
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Ryan T.L., Shaffer C.A.,
Device Independent Perspective Volume Rendering Using Octrees,
, Blacksburg, VA, USA, Virginia Polytechnic Institute && State University, 1992.
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Pemmaraju S.V., Shaffer C.A.,
Analysis of the Worst Case Space Complexity of a PR Quadtree,
, Blacksburg, VA, USA, Virginia Polytechnic Institute && State University, 1992.
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1991
Shaffer C.A.,
"Real-time robot arm collision detection for telerobotics",
Comput. Electr. Eng., vol. 17, no. 3, Tarrytown, NY, USA, Pergamon Press, Inc., pp. 205–215, 1991.
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Shaffer C A.,
Getting Around on a Sphere,
, San Diego, CA, USA, Academic Press Professional, Inc., 1991.
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Brown P.R., Shaffer C.A., Webber R.E.,
"A paging scheme for pointer-based quadtrees",
CSC '91: Proceedings of the 19th annual conference on Computer Science, New York, NY, USA, ACM, pp. 687, 1991.
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Shaffer C.A., Stout Q.F.,
"Linear time distance transforms for quadtrees",
CVGIP: Image Underst., vol. 54, no. 2, Orlando, FL, USA, Academic Press, Inc., pp. 215–223, 1991.
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Shaffer C.A., Carstensen L.W., Miranda V.F., Kriss S.A., Morrill R.W., Fox E.A.,
Project GEOSIM: The First Two Modules,
, Blacksburg, VA, USA, Virginia Polytechnic Institute && State University, 1991.
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Lattanzi M.R., Shaffer C.A.,
"An optimal boundary to quadtree conversion algorithm",
CVGIP: Image Underst., vol. 53, no. 3, Orlando, FL, USA, Academic Press, Inc., pp. 303–312, 1991.
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Shaffer C.A., Feustel C.D.,
A Representation and Algorithm for Exact Computation of Cascaded Polygon Intersections with Fixed Storage Requirements,
, Blacksburg, VA, USA, Virginia Polytechnic Institute && State University, 1991.
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1990
Shaffer C A.,
"A full resolution elevation representation requiring three bits per pixel",
SSD '90: Proceedings of the first symposium on Design and implementation of large spatial databases, New York, NY, USA, Springer-Verlag New York, Inc., pp. 45–64, 1990.
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Ang C -H., Samet H., Shaffer C A.,
"A New Region Expansion for Quadtrees",
IEEE Trans. Pattern Anal. Mach. Intell., vol. 12, no. 7, Washington, DC, USA, IEEE Computer Society, pp. 682–686, 1990.
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Shaffer C A., Samet H., Nelson R C.,
International Journal of Geographic Information Systems,
, vol. 4, no. 2, pp. 103–131, 1990.
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Oskard D N., Hong T -H., Shaffer C A.,
"Real-Time Algorithms and Data Structures for Underwater Mapping",
IEEE Transactions on Systems, Man, and Cybernetics, vol. 20, no. 6, pp. 1469–1475, November/Decembe, 1990.
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1988
Ang C -H., Samet H., Shaffer C A.,
"Fast Region Expansion for Quadtrees",
Proceedings of the Third International Symposium on Spatial Data Handling, pp. 19–38, August, 1988.
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Oskard D N., Hong T -H., Shaffer C A.,
"Real-Time Algorithms and Data Structures for Underwater Mapping",
SPIE Symposium on Sensor Fusion: Spatial Reasoning and Scene Interpretation, November, 1988.
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1986
Shaffer C A.,
"An Empirical Comparison of Vectors, Rasters, and Quadtrees for Representing Geographic Data",
Proceedings of the International Colloquium on the Construction and Display of Geoscientific Maps Derived from Databases, Geologisches Jahrbuch A 104, pp. 99–115, December, 1986.
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Shaffer C A., Samet H.,
"An Optimal Quadtree Construction Algorithm",
Proceedings of the Eighth International Conference on Pattern Recognition, pp. 317–319, October, 1986.
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Samet H., Shaffer C A., Nelson R C., Huang Y -G., Fujimura K., Rosenfeld A.,
"Hierarchical Data Structures for Geographic Information",
Proceedings of the International Colloquium on the Construction and Display of Geoscientific Maps Derived from Databases, Geologisches Jahrbuch A 104, pp. 97–98, December, 1986.
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1985
Samet H., Shaffer C A., Webber R E.,
"The Segment Quadtree: A Linear Quadtree-Based Representation for Linear Features",
Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'85), pp. 385–389, June, 1985.
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1984
Samet H., Rosenfeld A., Shaffer C A., Webber R E.,
"Processing Geographic Data with Quadtrees",
Proceedings of the Seventh International Conference on Pattern Recognition, pp. 212–215, August, 1984.
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Samet H., Rosenfeld A., Shaffer C A., Webber R E.,
"Use of Hierarchical Data Structures in Geographical Information Systems",
Proceedings of the International Symposium on Spatial Data Handling, pp. 392–411, August, 1984.
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1983
Samet H., Rosenfeld A., Shaffer C A., Webber R E.,
A Quadtree-Based Geographical Information System}, booktitle{Proceedings of the Third Scandinavian Conference on Image Analysis,
, pp. 231–236, July, 1983.
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Samet H., Rosenfeld A., Shaffer C A., Webber R E.,
"Quadtree Region Representation in Cartography: Experimental Results",
IEEE Transactions on Systems, Man, and Cybernetics, vol. 13, no. 6, pp. 1148–1154, November/Decembe, 1983.
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2000 Level Courses
4000 Level Courses
5000 Level Courses
6000 Level Courses
Algoviz Project Steering Committee Workshop
Granting Institution: National Science Foundation
Amount:
Building a Community and Establishing Best Practices in Algorithm Visualization Through the Algoviz Wiki
Granting Institution: National Science Foundation
Amount: $149,206
Refinement and Analysis of Log Surface Defect Detection Methods using High-Resolution Laser Scanner
Granting Institution: USDA Forest Service
Amount: $50,000
Stochasitic Models Of Cell Cycle Regulation In Eukaryotes
Granting Institution: National Institute of General Medical Sciences
Amount: $216,240
The AlgoViz Portal: Lowering the Barriers for Entry into an Online Educational Community
Granting Institution: National Science Foundation
Amount: