Technologies for The Semantic Web and for The Knowledge Web Enrico Motta Knowledge Media Institute The Open University

Premise Main Goal –To illustrate some web-based technologies, which support collaborative work, learning, and knowledge sharing. Some Tenets –Concrete technologies in concrete use –Variety of knowledge management processes (e.g., knowledge publishing, retrieval, sharing, reuse) –Term “ Knowledge Web ” emphasises Focus on web-based technologies to support sharing, reuse, learning, publishing, etc.. The web as the locus in which knowledge sharing, learning and collaborative work take place

The Semantic Web (quickly ….)

The Web: Hyperlinked Resources

A Digital Library as Hypertext

A Digital Library with added meaning criticises buildsOn contradicts

Sem.Web=Conceptual Layer over Resources

<rdf:RDF xmlns=" xmlns:org=" xmlns:rdf=" Motta Enrico Enrico Motta

The need for Shared Ontologies familyName givenName fullName homePageAddress... <rdf:RDF xmlns=" xmlns:org=" xmlns:rdf=" Motta Enrico Enrico Motta

The Knowledge Web Web-based technologies to support knowledge sharing, etc … Collaborative work and learning on the web

Health-Care Scenario

Ontologies for HealthCare Example base-ontology simple-time common-concepts bibliographic-data generic-events medical-ontology medical-guideline-ontology generic-technologies organization-ontology pressure-ulcer-ontology

Class Hierarchy for Medical Guideline Temporal-thing Plan Medical-Guideline Therapeutic-GuidelinePreventive-GuidelineDiagnostic-Guideline Ontology Simple-time Planning Ontology Medical-Guidelines Ontology

A Digital Library with added meaning criticises buildsOn contradicts

Phenomena of interest to scholars “ Who ’ s building on the ideas in this paper? ” “ Who ’ s challenged this paper? ” “ Has anyone proposed a similar solution but from a different theoretical perspective? ” “ Are there groups building on theory T, but who contradict each other? ” “ Is there any software which tackles problem P? ” “ What impact did Language L have? ” “ Are there distinctive theoretical perspectives on problem P? ”

Scholarly Ontologies Project Use scenario: researchers submit claims about their documents to a digital library internet server: key contributions and connections to the literature Server maintains model of the literature network, and provides intelligent search, automated linking, structural analysis, agents, concept maps...

ClaimMaker

“Are there any arguments against the intellectual framework on which this paper builds?” arguments against negative relations intellectual framework a set of concepts is the extended set of concepts that are linked to/from the concepts in the original set by a positive relation. this paper

There ’ s nothing new about global warming

Palaeo- leaves

Image Database

Conclusions Shown examples of how Web, Knowledge, HCI and Language technologies can be harnessed to support KM processes Knowledge Capture Technologies are crucial New forms of knowledge publishing? Semantic web technology will facilitate the emergence of hybrid communities –E.g., software agents contribute to the dialectic of a scientific or scholarly community New web interfaces may be needed –Navigation should exploit semantic markup