Geospatial Semantic Query by Integrating Geospatial Reasoning on the Geospatial Semantic Web

In today´s fast-growing information age, currently available methods for finding and using information on the Web are often insufficient. Today´s retrieval methods are typically limited to keywords searches or sub-string matches, therefore, users may often miss critical information when searching the Web. After reviewing the real world semantic Web, additional research is needed on the geospatial semantic Web. We are rich in geospatial data but poor in up-to-date geospatial information and knowledge that are ready to be used by anyone who wants to use it. In this paper, we implement an approach for querying geospatial semantic by integrating spatial reasoning that contributes to the development of geospatial semantic Web. It is important to establish a geospatial semantics that support for effective spatial reasoning for performing geospatial semantic query. People are more understandable spatial relation (i.e. qualitative reasoning) through natural language instead of metric measurements (i.e. quantitative reasoning). Qualitative spatial reasoning is necessary because the common-sense reasoning which humans apply to spatial issues is generally qualitative. These include the use of qualitative modifiers, proxy place names to support effective spatial ontologies with a formal semantics; the representation of those semantics such that they are available to machines for processing and to people for understanding. Compared to earlier keyword-based and information retrieval techniques that rely on syntax, we use semantic approaches in our spatial queries. Semantic approaches needs the development of ontologies. We use ontology mapping because such complex semantic comparisons between domain values of different data sets cannot be done using a simple algorithm or a fully automatic method. To be efficient and effective querying, we integrate geospatial reasoning such as coordinate relationships, topological relationships, spatial inference and etc