Guoray Cai
Associate Professor of Information Sciences and Technology
Affiliate Faculty, GeoVISTA Center, Department of Geography

Affiliate Faculty, Department of Computer Science and Engineering

College of IST is recruiting -- Faculty position on Security and Risk Analysis

Active Research Projects 

 

  • NSF / ITR: DAVE_G: Dialogue-Assisted Visual Environment for Geographic Information.

For more details, please download a flyer and a video clip of our prototype

 

 

 

 

 

Contact Information for Guoray Cai

cai@ist.psu.edu
(814) 865-4448

 

Education

Ph.D., Information Science, University of Pittsburgh. 1999
M. A., Geography, West Virginia University, 1993
M. E., Electrical Engineering, Tianjin University, China. 1986
B. E., Electrical Engineering, Tianjin University, China, 1983

 

Research and Teaching

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.

 

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

 

Biographical Information

Cai was 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 served with federal and state academic advisory groups for legislative and policy decisions.

 

He has published papers in the international journals such as Proceedings of IEEE, International Journal of Geographical Information Science, Transactions in GIS, NETWORKS,  and Networks and Spatial Economics.  He has also presented papers on the IEEE international symposium on circuits and systems, international conference on spatial data handling, international conference on GIScience, and the Joint ACM/IEEE International conference on Digital Libraries. He is a member of ACM, IEEE, and ASPRS.

Website

Dr. Cai’s personal Website: http://www.personal.psu.edu/gxc26/

Dr. Cai’s Research group: http://spatial.ist.psu.edu/

Dr. Cai’s teaching Website: http://ist210.3c.ist.psu.edu/

 

Publications

Refereed Journal Articles

13.  Cai, G. (2006) "Contextualization of geospatial database semantics for mediating human-GIS dialogues." GeoInformatica (in press)

12.   MacEachren, A. M. and Cai, G. (2006) "Supporting Group Work in Crisis Management: Visually mediated human-GIS-human dialogue." Environment and Planning B: Planning and Design. 33(3), pp. 435-456.

11.   Cai, G., Sharma, R., MacEachren, A.M., and Brewer, I. (2006) “Human-GIS Interaction Issues in Crisis Response”. International Journal of Risk Assessment and Management. (special issue on GIS in Crisis management) 6(4), pp. 388-407.

10.   MacEachren, A. M., G. Cai, Brewer, I., and Chen, J. (2006) "Supporting map-based geocollaboration through natural interfaces to large-screen display." Cartographic Perspectives.  54(1), pp. 4-22

9.   Cai, G. and MacEachren, A. (2005) "Supporting effective human interactions with geographic information during crisis response." GeoMatica 59(4): 415-25.

8.   Cai, G. (2005) “Extending distributed GIS to support geocollaborative crisis management” Geographical Information Science. (Special issue on distributed GIS) 11(1): 4-14.

7.      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.

6.      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

5.      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.

4.      Cai, G. (2004) “Visualization for Geographical Information Retrieval” New Technology in Library and Information Services Special issue on information visualization. 2004(10): 14-23.

3.      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)

2.  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.

1.  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

Refereed Conferences and Book Chapters:                                                          

Cai, G. and Xue, Y. (2006) “Activity-oriented Context-aware Adaptation Assisting Mobile Geo-spatial Activities.”  ACM IUI’2006 – International Conference on Intelligent User Interface, Sydney, Australia, January 29 – February 1, 2006.

Cai, G, MacEachren, AM, Brewer, I, McNeese, M, Sharma, R, Fuhrmann, S. (2005) “Map-Mediated GeoCollaborative Crisis Management”, Lecture Notes on Computer Science 3495: Proceedings of the IEEE International Conference on Intelligence and Security Informatics (ISI 2005), Atlanta, GA, USA, May 19-20, 2005. Edited by Kantor P, Muresan G, Roberts F, al. e. Atlanta, Georgia, Springer, 2005, pp 429-435.

Cai, G, Wang, H, MacEachren, A.M. (2003) “Communicating vague spatial concepts in human-GIS interactions: a collaborative dialogue approach”, Lecture Notes in Computer Science 2825: Spatial information theory - Foundations of Geographic Information Science; COSIT 2003 Proceedings, Kartause Ittingen, Switzerland. September 24-28, 2003. pp. 287 - 300

Cai, G. (2002) “GeoVIBE: A Visual Interface for Geographical Information in Digital Libraries,” Lecture Notes on Computer Science 2539: Visual Interfaces for Digital Libraries (Springer Verlag) pp. 171-187

Cai, G. (2002) “GeoVSM: An Integrated Retrieval Model For Geographical Information,” Lecture Notes on Computer Science 2478: Geographical Information Science: Second International Conference on GIScience, Boulder, Colorado, September 25-28, 2002.  pp. 65-79.

Rauschert, I, Agrawal, P, Fuhrmann, S, Brewer, I, Sharma, R, Cai, G, et al. (2002) “Designing a user-centered, multimodal GIS interface to support emergency management”. In: Proceedings of the tenth ACM international symposium on Advances in geographic information systems. Chen S-C and Voisard A. (eds.) McLean, VA: ACM, 2002: 119-124.

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.

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 GI S 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.

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.