Guoray Cai

Biographical Information

Dr. Guoray Cai is an associate professor of Information Sciences and Technology at Penn State University, with affiliate appointments in Geography as well as in Computer Science and Engineering.

He is the founding director of the Spatial Information and Intelligence Laboratory, which is housed in IST. He also is a member of the GeoVISTA center and the Center for Human-Computer Interaction.

Dr. Cai conducts research in the areas of information retrieval, geographical information science, human-computer interaction and communication, and visual mediation of collaborative work. He has published papers in international journals such as Proceedings of IEEE, International Journal of Geographical Information Science, Transactions in GIS, Geoinformatics, Environment and Planning B, and the international journal of NETWORKS. He is a member of ACM, IEEE, and ASPRS.

Research and Teaching

Dr. Cai's research includes geographical information systems, geocollaboration, human-computer interaction, information retrieval, and spoken-dialogue systems. His recent work involves developing visually-mediated multimodal interactions techniques for enabling geocollaborative crisis management.

Cai teaches undergraduate and graduate courses in the areas of relational databases, spatial databases, and geographical information science, and visual analytics.

Publications:

Cai, G. 2008 “Modeling Contextual Knowledge for Adaptive Geographic Visualization” Proceedings of the International Conference on Virtual Geographic Environment, Hongkong, China, January 7-8, 2008

Fuhrmann, S., MacEachren, A. M., Cai, G., (2008) “Geoinformation technologies to support collaborative emergency management,” Hsinchun Chen, Lawrence Brandt, Valerie Gregg, Roland Traunmüller, Sharon Dawes, Eduard Hovy, Ann Macintosh, and Catherine A. Larson, (Eds.), Digital Government: Advanced Research and Case Studies, Springer. Pp. 395-420

Yu, B. and Cai, G. (2007) “A query-aware document ranking method for geographic information retrieval”, in Proceedings of the 4th ACM workshop on Geographical information retrieval, ACM: Lisbon, Portugal. pp.49-54.

Cai, G. 2007,“Formalizing Analytical Discourse in Visual Analytics,” Proceedings of VAST’2007 – IEEE Symposium on Visual Analytics Science and Technology, Sacramento, CA, Oct. 28 – Nov. 1, 2007

Cai, G. (2007) "Contextualization of geospatial database semantics for mediating human-GIS dialogues." GeoInformatica 11(2) pp.217-237

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.

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.

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

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

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

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

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.

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

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, 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. 05. Edited by Kantor P, Muresan G, Roberts F, al. e. Atlanta, Georgia, Springer, 2005, pp 429-435.

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. 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.