Abstract
With the growing importance of RDF data in web data management, there is an increasing need for modeling and querying RDF data. In this chapter, firstly, the authors formally define spatiotemporal RDF data and construct a spatiotemporal RDF model st-RDF that is used to represent and manipulate spatiotemporal RDF data. Secondly, they propose the stQuery algorithm for subgraph matching of spatiotemporal RDF data. This algorithm can quickly determine whether the query result is empty for queries whose temporal or spatial range exceeds a specific range by adopting a preliminary query filtering mechanism in the query process. Thirdly, they propose a sorting strategy that calculates the matching order of query nodes to speed up the subgraph matching. Finally, they conduct experiments in terms of effect and query efficiency. The experimental results show the performance advantages of this approach.