The Semantic Web. The Web Today Designed for Human to read Cannot express meaning Architecture: URL –Decentralized: Link structure Language: html.

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Presentation transcript:

The Semantic Web

The Web Today Designed for Human to read Cannot express meaning Architecture: URL –Decentralized: Link structure Language: html

XML HTML –Tag + Rule XML separates data and its display –Tag XML cannot express meaning DTD design a XML document

Semantic Web Designed for computer program to manipulate meaningfully. An extension of the current Web A Knowledge web that enables machines to comprehend semantic documents and data. Express meaning by ontological language.

Architecture

URI Architecture –Universial Resource Identifier Language –XML + XMLS –RDF + RDFS –DAML + OIL –OWL

RDF

Technology and Tools Description Logics Frame-based Systems Standard Web Web Service Agents

XML Parser DocumentBuilderFactory factory –DocumentBuilder builder Document doc Node root = doc.getDocumentElement() NodeList l = root.getChildNodes() Node current = l.item(i) Node type: DOCUMENT_NODE, ELEMENT_NODE, TEXT_NODE

XSLT Transform an XML document to other format