A Federated GIS Data Service System for Tabular Data Integration Using Ontology Approach

Abstract

Tabular data available on the web conveys semantics of the information. Integration of the tabular data derives the knowledge information that can be queried and displayed on mapping system. This paper proposes a Federated GIS Data Service System (FGDSS) that supports integrating of the tabular data. Here, the tabular data has spatio-temporal information. The system uses multiple-domain ontology as an intermediate model to link and represent the integrated tabular data. The multiple-domain ontology is a collection of ontologies adopted from many pre-defined ontologies. A method to integrate the tabular data is presented by integration operators: merge, align, and combine operator. With the proposed system, the organization can integrate their data to the data of another organization. The obtained integrated data can be applied for querying on the SPARQL endpoint, and for displaying on the mapping system.