7. Web Of Data Standard approach Analogous approach Publish Data A.Com **** not be forced to make targeted developments Pen Drive Searching some.Com **** Pen Drive 7
9. So semantic Web is.. Collection of Technologies To Realize “Web Of Data” 9
10. Semantic Web Web 2.0 Are they same???? Its all about people and communication It is focuses on machines 10 Standard and Technologies Collaboration and Sharing
11. Semantic Web World Wide Web Are they Different???? WWW Adds new data and metadata to existing Web documents Extension of Web documents to data Semantic Web Extension 11
12. So what it aims at??? In short aims at………. The goal of the semantic web is to be “a web talking to machines” I know What you mean…… Providing meaningful information Supplying the web with formalized knowledge in addition to its actual informal content Designing a framework for interoperability accessible by computers. 12
13. Requirements Realization of a semantic web will require several layers of developments Interoperability Client Devices Applications Resources Languages Infrastructure 13
14. Approaches to Semantic Web 2 BUSINESS & PROFESSIONAL Electronic commerce Bioinformatics Knowledge Biological data WWW Semantic Web PERSONAL Personalization Gathering and filtering relevant information 14
15. RDF Building Blocks of Semantic Web Semantic Web Ontology Knowledge Representation Languages Andinferences 15
16. Resource Description Framework RDF??? RDF??? METADATA Describes Developed under the guidance of the World Wide Web Consortium Allow developers to build search engines that rely on the metadata Developed by Developed by Providing interoperability among applications that exchange machine-understandable information on the Web site's sitemap dates of updates Developed for Developed for 16
17. RDF provides a model for describing resources RDF Data Model RDF Description Property Type3 Property Type2 Resource 2 Resource 3 Resource Property Type4 Property Type1 “Atomic Value” “Atomic Value” 17
18. An example Consider this statements "The author of Document 1 is David“ “David is the author of Document 1" Property-Type Document1 Author “David” Value Resource 18
19. One step further Document1 Author_001 Author Email id Company Name david@.com Some ltd David 19
20. Ontologies An ontology is a formal conceptualization of a domain that is usable by a computer involves an explicit description of domain structure terms used to describe the domain 20 Allows applications to agree on the terms when communicating
32. Languages and inferences “languages are necessary for expressing the content of the semantic web” Inference Engines Languages Standardizing syntax Precise Semantics 22
33. Major Challenges in Languages Different modeling styles Logic Objects Constraints from AI View-Queries Identity Non-ambiguous names-URI Identifying objects of same domain Modularity Re-use of resources Extracting of section on ontology 23
34. 0 24 Knowledge Representation Automated reasoning DB1 sets of inference rules Structured collections of information
35. 25 Two section will be benefited when semantic web evolves A for????????