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RDF provides a basic way to represent data for the Semantic Web. We have been experimenting with the query paradigm for working with RDF data in semantic web applications. Query of RDF data provides a declarative access mechanism that is suitable for application usage and remote access. We describe work on a conceptual model for querying RDF data that refines ideas first presented in at the W3C workshop...
The usability of research papers on the Web would be enhanced by a system that explicitly modelled the rhetorical relations between claims in related papers. We describe ClaiMaker, a system for modelling readers’ interpretations of the core content of papers. ClaiMaker provides tools to build a Semantic Web representation of the claims in research papers using an ontology of relations. We demonstrate...
Ontologies are emerging as a key solution for knowledge sharing in co-operative business environment. From the technology point of view, the growth of Internet use has favoured the development of environments devoted to collaborative and distributed work, allowing different communities to increase flexibility and effectiveness in their work. From the representation point of view, an ontology management...
As long as there is not a sufficient base of RDF-annotated pages, the benefits of participating in the Semantic Web are barely visible. This is true in particular for content providers like individuals or small institutions. These potential participants can’t afford the additional work necessary for the Semantic Web, yet they’re needed for the Semantic Web to reach the critical mass that will make...
Ensuring that ontologies are consistent is an important part of ontology development and testing. This is especially important when autonomous software agents are to use ontologies in their reasoning. Reasoning with inconsistent ontologies may lead to erroneous conclusions. In this paper we introduce the ConsVISor tool for consistency checking of ontologies. This tool is a consistency checker for...
WebTheme combines the power of software agent-based information retrieval with visual analytics to provide users with a new tool for understanding web information. WebTheme allows users to both quickly comprehend large collections of information from the Web and drill down into interesting portions of a collection. Software agents work for users to perform controlled harvesting of web material of...
The Semantic Web promises to change the way agents navigate, harvest and utilize information on the internet. By providing a structured, distributed representation for expressing concepts and relationships defined by multiple ontologies, it is now possible for agents to read and reason about published knowledge, without the need for scrapers, information agents, and centralized ontologies. Agents...
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