Slide 1Objective of the UnitOutline of the UnitSemantic web technologies discussed so farTypes of ApplicationHorizontal Information Products at ElsevierSlide 7Data Integration at AudiSlide 9Skill Finding at Swiss LifeSlide 11Think Tank Portal at EnterSearchSlide 13E-LearningWeb ServicesSlide 16Multimedia Collection Indexing at Scotland YardOn-line Procurement at Daimler ChryslerDevice Interoperability at NokiaCommon Threads and ChallengesDr. Bhavani ThuraisinghamSeptember 2006Building Trustworthy Semantic WebsLecture #10: Semantic Web Applications10-201/14/19 06:42 Objective of the Unit0This unit will provide an overview of various applications of the semantic web. Applications of trustworthy semantic web are yet to be examined.10-301/14/19 06:42 Outline of the Unit0Summary of semantic web technologies discussed so far0Discussion of applications (Chapter 6)-Horizontal Information Products at Elsevier-Data integration at Audi-Skill finding at Swiss Life-Think Tank Portal at EnterSearch-E-Learning-Web Services-Multimedia Collection at Scotland Yard-Online Procurement at Daimler Chrysler-Device Interoperability at Nokia0Common threads and challenges10-401/14/19 06:42 Semantic web technologies discussed so far0XML, XML Schema0RDF, RDF Schema0Ontology, OWL0Logic, Rules, Inference0Some discussion of security issues for each technology-Policy specification, Securing documents10-501/14/19 06:42 Types of Application0Horizontal Information Products at Elsevier: Integration0Data integration at Audi: Integration0Skill finding at Swiss Life: Search0Think Tank Portal at EnterSearch: Knowledge man agent0E-Learning: Knowledge management0Web Services: Web services (for any of the other applications discussed)0Multimedia Collection at Scotland Yard: Searching0Online Procurement at Daimler Chrysler: E-Business0Device Interoperability at Nokia: Interoperability10-601/14/19 06:42 Horizontal Information Products at Elsevier0Elsevier is publishing company based in Amsterdam-E.g., publisher of Computer Standards and Interface Journal that has papers on all kinds of computer related standards0Currently the journals and books are grouped by topics such as say operating systems, databases, etc. (or at a higher level, Biology, Chemistry, etc.)0Where do we then put the journal Computer Standards and Interfaces?0Need horizontal groupings also10-701/14/19 06:42 Horizontal Information Products at Elsevier0Semantic web technologies are being used by Elsevier-RDF for document representation-RDF for ontologies-Query language based on RDF to query the documents and the ontologies-E.g. Life Science Thesaurus EMTREE-Other publishing companies are following in Elsevier’s direction10-801/14/19 06:42 Data Integration at Audi0Integrate the data in multiple data sources to provide better customer relationship management and other services to improve profits0The databases are disparate and heterogeneous0Many current operations are carried out manually0Expensive and missed opportunities10-901/14/19 06:42 Data Integration at Audi0Ontolotues are being specified to address semantic heterogeneous0E.g., SLR is a type of camera; one applications calls it SLR, another application calls it Olympus-OM-100When the latter application encounters the term SLR, it will query the ontology and determine that SLR is a camera0Details are given in Chapter 610-1001/14/19 06:42 Skill Finding at Swiss Life0Swiss Life is an insurance company that developed a system to find all the skills in the company-E.g., John’s skills are on data management, ontology management0Challenging problem as people have multiple skills for different applications0Need the following capabilities-Cross listing of skills-Querying skills-- - - -10-1101/14/19 06:42 Skill Finding at Swiss Life0Ontologies are being developed to specify the skills and query languages to query the ontologies0E.g.<owl: Class rdf: ID = “Publishing”><rdfs: subClassOf rdf: resource = ‘#Skills”/></owl: Class><owl: Class rdf: ID = “Skills”>-- - - -</owl: Class>10-1201/14/19 06:42 Think Tank Portal at EnterSearch0EnterSearch is a consortium of corporations in Europe that provide IT for the energy companies0Similar to MCC in Austin TX0EnterSerach Portal currently describes the various research projects, papers etc.0XML representation is used for describing the web content0Need to represent semantics so that the corporations can get answers to useful questions of the form-“where do I put my computing resources to solve a problem?”10-1301/14/19 06:42 Think Tank Portal at EnterSearch0Semantic web technologies are being utilized – in particular ontoogies are developed for the following-Hardware-Software-Communications-E-Commerce-Agents-Market/Auction-Resource Allocation-- - - -10-1401/14/19 06:42 E-Learning0With the Internet and the web, we now have on-line universities, course offerings, tutoring etc.0Students should have the choice for selecting various courses in the order they want, provide they take the prerequisites0Semantic web technologies enable flexible access as well as integration of various data sources and processes to enable learning0Ontologies are being developed for learning applications-E.g., Contents of the courses-Description of the courses etc.10-1501/14/19 06:42 Web Services0Web services can be utilized by any of the other applications discussed in this unit (e.g., Elsevier, Audi etc.)0We services are invoked to carry out functions on the web including find locations, search for documents etc.0Simple services and compound services0Three components to the service-Service profile: Description of the service – what it does-Serviced model: how it does it-Service groundings: protocol for invoking the service10-1601/14/19 06:42 Web Services0DAML and DAML-S developed by the DARPA community combined with the European community developing OIL focused on ,languages for web services-Semantic of the web services (e.g., reasoning about the services, why certain actions are taken etc.)-DAML+OIL0W3C community started with DAML+OIL for ontology specifications and developed OWL0E.g., <profile: ServiceProvider rdf ID = “Sportsnews”>-- - - --</profile: ServiceProvider>10-1701/14/19 06:42 Multimedia Collection Indexing at Scotland Yard0Scotland Yard uses a database to keep track of the antiques that are stolen0While sophisticated indexing techniques have been developed, there is a problem with semantics0E.g.,