Yuhan Sun a Ph.D. student at Arizona State University majoring in Computer Science. He has been working as a research assistant in DataSys ( Lab since December 2014. His research focus is on Location-Aware Graph Queries. Graph data has become more informative and powerful when embracing the spatial data. Querying the spatial graphs can be challenging due to the inherent complexity of graph search and the integration with spatial constraints. Hence, new system architecture and indexing techniques are quite imperative. He has been the TA for several database and system classes, including CSE512, CSE412, and instructor for CSE511.