A Semantic Language for Querying Anonymous Web Sources
نویسندگان
چکیده
A great deal of work has been carried out in recent years to facilitate access to data and information available on the Web. Proposals converge in two additional areas which consist in providing the sources with semantic annotations and in designing languages and tools that are capable of using these annotations. However, a large number of sources have not yet been annotated suitably. Besides, languages and existing tools do not allow the user to formulate "blind" queries without knowing the sources. To overcome these two limitations, in this paper we propose a flexible query language which allows a user to query sources in an anonymous way without knowing their existence and their structure. Queries can be solved by a system which in advance discovers potential sources and memorizes their schemas. We clarify how such a system
منابع مشابه
Developing a BIM-based Spatial Ontology for Semantic Querying of 3D Property Information
With the growing dominance of complex and multi-level urban structures, current cadastral systems, which are often developed based on 2D representations, are not capable of providing unambiguous spatial information about urban properties. Therefore, the concept of 3D cadastre is proposed to support 3D digital representation of land and properties and facilitate the communication of legal owners...
متن کاملSemantic querying of relational data for clinical intelligence: a semantic web services-based approach
BACKGROUND Clinical Intelligence, as a research and engineering discipline, is dedicated to the development of tools for data analysis for the purposes of clinical research, surveillance, and effective health care management. Self-service ad hoc querying of clinical data is one desirable type of functionality. Since most of the data are currently stored in relational or similar form, ad hoc que...
متن کاملStudy of Different Approaches to the Integration of Spatial XML Web Resources
The research community has begun to investigate foundations for the next stage of the Web, called Semantic Web. Current efforts include the Extensible Markup Language XML, the Resource description Framework, Topic Maps and the DARPA Agent Markup Language DAML+OIL. A rich domain that requires special attention is the Geospatial Semantic Web. However, in order to approach the Geospatial Semantic ...
متن کاملAn Executive Approach Based On the Production of Fuzzy Ontology Using the Semantic Web Rule Language Method (SWRL)
Today, the need to deal with ambiguous information in semantic web languages is increasing. Ontology is an important part of the W3C standards for the semantic web, used to define a conceptual standard vocabulary for the exchange of data between systems, the provision of reusable databases, and the facilitation of collaboration across multiple systems. However, classical ontology is not enough ...
متن کاملOntology-Based Geospatial Web Query System
1. Introduction This abstract describes our system that provides DBMS type querying over heterogeneous geospatial data sets distributed over the Web. Our work contributes to the Semantic Web and to geospatial interoperability. Our work is done in the context of a proposed statewide land information system, which will consist of both spatial and nonspatial data that remain on local servers. One ...
متن کامل