Kai Liu is currently a graduate student in the Department of Geography and GeoInformation Sciences in the College of Science at George Mason University. Previously he was a visiting scholar at the Center of Intelligent Spatial Computing for Water/Energy Science (CISC), and worked for 4 years at Heilongjiang Bureau of Surveying and mapping in China. His previous education was acquired at Wuhan University, China, BA Geographic Information Science. His research focuses on Geospatial semantics and Geospatial metadata management.