Guoray Cai

Contact:

307F IST Building
University Park, PA 16802
Office Phone: 865-4448
E-mail Dr. Cai.

Click here to visit Dr. Cai's Web site at the School of Information Sciences and Technology.

Background:

Assistant Professor of Information Sciences and Technology
Affiliate Faculty, GeoVISTA Center, Department of Geography
Affiliate Faculty, Department of Computer Science and Engineering
B.Engr., Electrical Engineering, Tianjin University, China, 1983
M.Engr., Electrical Engineering, Tianjin University, China, 1986
M.A., Geography, West Virginia University, 1993
Ph.D., Information Science, University of Pittsburgh, 1999

View Dr. Cai's curriculum vitae for a full list of publications, awards, grants, research projects, service work, presentations, field work, and affiliations.

Research Interests

Cai's research includes geographical information systems, human-computer interaction, information retrieval, and geography of cyberspace. His recent work, funded by NSF, involves developing cooperative human-GIS interfaces to enable multimodal, mixed-initiative dialogues, for collaborative problem-solving with GIS.

Spatial databases, geographical information systems, information retrieval, visualization;
Telecommunications networks and regional infrastructure planning, geography of cyberspace;
Remote sensing and image processing, the modeling of ecosystem dynamics;
Graph theory and algorithms, design of reliable communications networks.

Teaching

Cai's teaching interests include relational databases, spatial databases, and geographical information science.

Organization of data; relational databases, distributed databases
Spatial information science
Web application development

Dr. Cai is the recipient of a NASA Global Change Graduate Fellowship, the Allen Kent Award from University of Pittsburgh, and a presidential award from Tianjin University, China. He has been invited to present his work at many international conferences. He has published papers in the international journal NETWORKS, and in the proceedings of the IEEE international symposium on circuits and systems, international conference on spatial data handling, international symposium on spatial data accuracy, and the international conference on tele-geoprocessing. He is an active member of the Association of Computing Machinery (ACM) and American Society of Photogrammetry and Remote Sensing (ASPRS). He was a research scientist at the Chinese Academy of Sciences for five years. Dr. Cai has broad experience, including the NASA Global Change Program, USDA Forest Service, Pennsylvania Department of Education, as well as the National Planning and Development Committee of China.

Publications

Cai, G. (forthcoming) "Extending distributed GIS to support geocollaborative crisis management" Geographical Information Science. Special issue on distributed GIS (accepted)

MacEachren, A. M. and Cai, G. (forthcoming) "Supporting Group Work in Crisis Management: Visually mediated human-GIS-human dialogue." Environment and Planning B: Planning and Design. (accepted)

MacEachren, A. M., G. Cai, Brewer, I., and Chen, J. (forthcoming) "Supporting map-based geocollaboration through natural interfaces to large-screen display." Cartographic Perspectives. (In press)

Cai, G. (forthcoming) "Visualization for Geographical Information Retrieval" New Technology in Library and Information Services Special issue on information visualization. (In Press).

Cai, G., Wang, H., MacEachren, A.M., and Fuhrmann, S. (2005) 'Natural Conversational Interfaces to Geospatial Databases'. Transactions in GIS, 9(2), pp.199-221.

MacEachren, A M, Cai, G, Sharma, R, Brewer, I and Rauschert, I (2005) "Enabling collaborative geoinformation access and decision-making through a natural, multimodal interface". International Journal of Geographical Information Science 19(3): 293-317

Cai, G., Sharma, R., MacEachren, A.M., and Brewer, I. (2005) "Human-GIS Interaction Issues in Crisis Response". International Journal of Risk Assessment and Management. special issue on GIS in Crisis management (in press)

MacEachren, A.M., Gahegan, M., Pike, W., Brewer, I., Cai, G., Lengerich, E., and Hardisty, F. (2004) 'Geovisualization for knowledge construction and decision support'. IEEE Computer Graphics and Applications. 24(1) pp.13 - 17.

Sharma, R., Yeasin, M., Krahnstoever, N., Rauschert, Cai, G., Brewer, I., MacEachren, A., and Sengupta, K. (2003) 'Speech-Gesture Driven Multimodal Interfaces for Crisis Management'. Proceedings of the IEEE. 91(9) pp.1327-1354. (special issue on human-computer multimodal interface)

Cai, G. 2002, "A GIS Approach to the spatial assessment of telecommunications infrastructure," Networks and Spatial Economics, (special issue on Geographical Information Science). vol. 2, pp. 35-63.

Cai G. and Sun Y., 1989, "The Minimum Augmentation of Any Graph to a K-edge-connected Graph". NETWORKS, Vol.19 (1989), no. 1, pp.151-172

Cai, G. (2002), "GeoVIBE: A Visual Interface for Geographical Information in Digital Libraries." In K. Borner, and C. Chen (Eds.), LNCS 2539: Visual Interfaces to Digital Libraries, Springer Verlag.

Rauschert, I., P. Agrawal, S. Fuhrmann, I. Brewer, R. Sharma, G. Cai, and A. MacEachren (2002), "Designing a User-Centered, Multimodal GIS Interface to Support Emergency Management." ACM International Symposium on Advances in Geographical Information Systems

Cai, G., Sochats, K., and Williams, J., 1999, "Mapping and Analysis of Pennsylvania's Telecommunications Infrastructure". Proceedings of ESRI User Conference, San Diego, CA. July 26-30.

Cai, G., Hirtle, S., C., and Williams, J., 1999, "Mapping of geography of cyberspace using telecommunications infrastructure information". In: Laurini (Ed.), TeleGeo'99 -- the First International Workshop on Telegeoprocessing, Lyon, France. May 6-7, 1999.

Hirtle, S. C., and Cai, G, 1998, "Classification structures for cognitive maps". In: Hayashi, et al, (eds.), Data Science, Classification, and Related Methods. Springer-Verlag, Tokyo 1998. pp.394-403.

Hirtle, S. C., Sorrows, M. E., and Cai, G., 1998, "Clusters on the World Wide Web: creating neighborhoods of make-believe". Proceedings of 1998 Hypertext Conference. Pittsburgh, USA.

Cai, G., and Hirtle, S. C., 1996, "Retrieving environmental information from digital libraries". Eco-Informa'96, Lake Burna Vista, Florida. November 1996

Elmes G. A., Cai, G. and Twery M. J., 1994, "Estimating Spatial Data Error By Inference on a Causal Network." In: Waugh T. C. and Healey R.G. (eds), Advances in GIS Research, Taylor and Francis, Philadelphia

Elmes G. A. and Cai, G., 1994, "Structural reasoning for spatial database accuracy assessment" in Congalton R. G. (ed.) Proceedings: International Symposium on Spatial Accuracy of Natural Resource Databases, American Society for Photogrammetry and Remote Sensing, Bethesda, MD, 141-149.

Cai G. and Elmes G.A., 1992, "Towards Intelligent Databases For Geographical Information Systems", Technical Papers on ASPRS/ACSM/RT'92 Convention, August 3-8, 1992. Washington D. C. Volume 5: Resource technology. pp.388-397.

Cai G. and Sun Y., 1989, "The Minimum Augmentation of Any Graph To a K-edge-connected Graph". NETWORKS, Vol.19 (1989), no. 1, pp.151-172, John Wiley & Sons Inc., N.Y.

Elmes G.A. and Cai G., 1992,"Data Quality Issues In User Interface Design For a Knowledge-based Decision Support System". Proceedings of the 5th International Symposium on Spatial Data Handling, Atlanta, Georgia. Aug,, 1992. pp.303-312.

Cai G. and Sun Y., 1986, "The Minimum Augmentation of Any Connected Graph To a K-edge-connected Graph". Proceedings of IEEE 1986 International Symposium on Circuits and Systems. Held in San Jose, CA, May, 1986. pp.984-987.