Concepts, Methods, and applications of semantic World Wide Web

Title	Concept of semantic World Wide Web Methods and Applications
Journal	Computer Engineering and Application
Year	2004
Author	Zhu Lijun, Tao LAN, Huang Chi
Level	Introductory
Comment

1. Summary

(1)The Study of semantic world wide willWeb
The publishing, storage, and processing methods of information on Alibaba Cloud have brought about a revolution,

(2)However, the concepts, ideas, and methods of the semantic World Wide Web are still in the formation stage. There are few comprehensive documents in China, and their understanding of the semantic World Wide Web and its related technologies is vague.

(3)This paper analyzes the origin, concept, and technical framework of the semantic World Wide Web, and summarizes the current situation of the semantic World Wide Web and related tools,

(4)This paper discusses the application of semantic World Wide Web Technology in intelligent information retrieval, data exchange between enterprises, knowledge management, and World Wide Web Services.

2. ArticleStructure

1.Preface

2.Concepts and origins of semantic World Wide Web

3.Composition of semantic World Wide Web

Hierarchy chart

Uris,
Unicode

XML,
Namespace, XML Schema

RDF
, RDF Schema

Ontology

Logic,
Proof, trust

4.Tools for semantic web development

RDF API

Language extension

5.Application of semantic World Wide Web

Summary

3 . Semantic World Wide Web Differences between semantic World Wide Web and traditional artificial intelligence systems

SemanticsWebKnowledge on the creation is scattered, and at the same time it has the versatility of the application.

Uri And Unicode

This layer is the cornerstone of the entire semantic World Wide Web. It successfully solves the problem of resource positioning on the World Wide Web and the standard format of cross-regional character encoding.

XML, namespace, XML Schema

Solved the order and structure of the document content, and did not solve the semantic and Contact Problems of the document content.

RDF and RDF Schema

RDFSMain class, features, constraints are as follows:

Core category:RDFS: resource,
RDF: property, RDFS: Class

Core features:RDF: type,
RDFS: subclassof, RDFS: subpropertyof

Core Constraints:RDFS: constraintresource,
RDFS: constraintproperty, RDFS: Range

RDFSolves the problem of describing resource objects without ambiguity, and makes the metadata information of the described resources understandable to machines..

RDFBased onXMLA clearly defined syntax model to help establish a semantic agreement (RDFS) And syntax encoding (XMLTo achieve metadata interoperability..

Ontology

RDF/RDFSWeak ability to describe words in specific application fields.

T. R. gruberdAnd othersOntologyDefinition:OntologyIs a clear concept of sharing..

Fensel, dEt al. thinkOntologyThe reason is that, OntologySharing and common understanding of terms between people and application systems.

Logic, Proof & Trust

Semantic-basedWebApplications also need to reason from descriptive knowledge based on specific rules.

Description logical Markup Language(Description logic Markup
Language, dlml)This is a method that usesDTDThe logical connector in the description logic is encapsulated, and the formal knowledge based on the description logic can be embedded into the described document.

ProofAndTrustThere is no mature concept about this part of content. However, researchers of the semantic World Wide Web generally believe thatProofAndTrustWill be the next generationWebImportant concepts.

However, as far as the data we see is concernedRDFThe model allows anyone to describe any resource. People with different opinions may describe the same resource in a completely different way. BecauseRDFThis powerful descriptive ability of the model makes it necessary to authenticate the description and ensure that the Declaration is not tampered. ThereforeSWFromRDF
All the descriptions of resources are implemented through the digital signature technology.

4 . Semantic Internet development tools RDF AIP

Currently implementedRDF APIMainly includeGinf, Redland, Jena, ILA Ila, rdf.net

Universal Interoperability Framework (Ginf):
W3C RDFInterest Group recommendation

Language extension

Applicable to the World Wide Web EnvironmentOntology,At least the following requirements should be met: semantic sharing, evolution, interactivity, consistency detection, balance of representation and scalability, ease of use, compatibility with other standards, and internationalization of languages.

Ontobroker, shoe, oil, DAML-ONTAnd recently replacedDAML-ONTOfDAML + Oil

5 . Application of semantic World Wide Web Intelligent Information Retrieval Data exchange and knowledge management between enterprises World Wide Web Service 6. Summary

Leading Research Group

In the United StatesDAML (Tim. Berners-LeeLead) IEEE Standard Upper Ontology Study Group

EuropeOntoweb (Dieter fenselLead)