Currently, the STKO team consists of the following members:

Krzysztof Janowicz

My name is Krzysztof Janowicz. I am an Associate Professor for Geographic Information Science at the Geography Department of the University of California, Santa Barbara, USA. I am running the STKO Lab which investigates the role of space and time for knowledge organization. I am also a Faculty Research Affiliate of the Center for Information Technology and Society as well as the Cognitive Science Program. Before, I was an Assistant Professor at the GeoVISTA Center, Department of Geography at the Pennsylvania State University, USA. I am the community leader of the 52° North semantics community and one of the two Editors-in-Chief of the Semantic Web journal. Prior moving to the US, I was working as postdoctoral researcher at the Institute for Geoinformatics (ifgi), University of Münster in Germany for the Münster Semantic Interoperability Lab (MUSIL). Before starting a career in academia, I was leading a software engineering and consulting company in Germany.



Song Gao

I am a Ph.D candidate with emphasis on GIScience, at the Department of Geography , University of California, Santa Barbara. I investigate the use of geospatial semantics in the Alexandria Digital Library (ADL) gazetteer incorporated with volunteered geographic information, under the guidance of Dr. Krzysztof Janowicz and Dr. Michael F. Goodchild. Prior to attending UCSB, I obtained my M.S. degree in the Geosoft Lab (, Institute of RS and GIS, Peking University, and my B.S. at the School of Geography, Beijing Normal University, China. In my past research, I worked extensively in analyzing mobile phone records and GPS-enabled taxi trajectories to reveal the spatio-temporal patterns of human mobility and urban transportation dynamics. I am interested in Big Geo-Data Research with Cloud Computing, Geospatial Semantics and GIScience Theory. Further, I have benefited from a valuable internship at Esri Software Research and Development center in Beijing, gaining experience in supporting geospatial industry strategy and software development, as I did a GIS project of Campus Smartphone Apps. Recently, I joined in the Apple Maps team as a summer intern at Cupertino, CA to build the next generation of Maps:-) In addition, I am sharing my GIS knowledge by providing GIS consultation for students&staffs at the UCSB Center for Spatial Studies’ Help Desk.


Bo Yan

My name is Bo Yan. I am a Ph.D. student in the Geography Department at the University of California, Santa Barbara. Prior to my study at UCSB, I had my bachelor's degree in Geographic Information System at Wuhan University, where I participated in research concerning transportation safety planning, location-based service (LBS) and social network analysis in the State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing. Currently, I am working with Prof. Krzysztof Janowicz in the STKO Lab to do research on geospatial semantics and semantic web.


Jiue-An (Jay) Yang

My name is Jiue-An (Jay) Yang. I am a Ph.D. Student in the joint doctoral program between Geography Department of the San Diego State University and University of California, Santa Barbara. I hold a MA in Geography from SUNY-Buffalo (2011) and BS in Geography from National Taiwan University (2007). As one of the freshest bloods in the STKO lab, my focus in the lab is visualization, spatial analysis, and information/knowledge discovery from web-based social media. Before joining STKO, I was member of Dr. Chris Renschler's Landscape-based Environmental System Analysis & Modeling (LESAM) Lab at SUNY-Buffalo and also serve in Dr. Ming Tsou's NSF-CDI Mappingideas project team at SDSU.


Yiting Ju

I am a first year MA/Ph.D. student in the Geography Department at the University of California, Santa Barbara. Mentored by Dr. Janowicz, I am currently working in the STKO Lab. Recently, I am working on building an ontology for Life Cycle Assessment (LCA). Before joining STKO, I obtained my bachelor degree in Geographic Information Science from Penn State. At Penn State, I had been working as a research intern at the GeoVISTA Center. My research interests include Big Geo Data, Crowdsourcing, Semantic Web, and Ontology Engineering.


Blake Regalia

Hello, my name is Blake Regalia. I earned my BS in Computer Science while studying GIS at UCSB. I am in my first year as an MA/PhD student working with the STKO lab. I like to focus my efforts on developing software that pushes hardware: simulations, data mining, visualization and modeling. I enjoy the technical nature of Geographic Information Systems; I yearn to apply modern computational power with the right algorithms to yield practical information. I am very grateful to be part of the STKO lab.


Rui Zhu

My name is Rui Zhu, a Ph.D. student at the Department of Geography, University of California, Santa Barbara. My major is Geographical Information Science (GIS) with an emphasis in spatial analysis, geospatial semantics and geostatistics under the advise of Dr. Krzysztof Janowicz and Dr. Phaedon Kyriakidis. Recently, my research focuses on combining multiple-point geostatiscs and deep learning techniques to analyze geographic information and then to extract the semantic meanings. At the same time, I am pursuing a second degree (master) in Applied Statistics from the Department of Statistics, UCSB. Before studying at UCSB, I got my master in Information Science from University of Pittsburgh. In the Geoinformatics Laboratory, I involved in many projects and research topics, including the PAM (Personalized Accessible Maps), PNS (Pedestrian Navigation Services), and the selection of landmarks for navigation guidance. I also did some work related to information visualization and spatiotemporal data mining.


Gengchen Mai

I am Gengchen Mai, a new MA/PhD student in the Department of Geography, University of California, Santa Barbara. Under the guidance of Dr. Krzysztof Janowicz, I study Geospatial Semantics and Semantic Web at STKO Lab. Before studying at UCSB, I earned my bachelor's degree in Department of Geographic Information Science, School of Resource and Environmental Sciences, Wuhan University.


Dara Seidl

I am a Geography PhD student in the joint doctoral program between San Diego State University and the University of California, Santa Barbara. My research focuses on the intersections between privacy and GIScience. I am interested in issues of access and dissemination of personally identifiable location data, geomasking techniques, and societal and individual reactions to geoprivacy challenges. I earned an M.S. in GIScience from San Diego State University and a B.A. in Geography and French from Colgate University. Prior to graduate school, I was employed as a GIS Analyst for a social science research firm, where I focused on survey data visualization and GPS data processing.


Former STKO members