The Semantic Web Professor James Hendler

Jim Hendler, 5/13/03 2 MIND SWAP Maryland Information and Network Dynamics Laboratory, Semantic Web and Agents Project J. Hendler B. Parsia Jennifer Golbeck Aditya Kalyanpur Grecia Lapizco-Encinas Katy Newton Evren Sirin Corporate Research Partners: Fujitsu Laboratory of America, College Park Lockheed Martin Advanced Technology Laboratories NTT Corp SAIC Corp. Owl-powered Semantic Web page (under development) Traditional web page  Ronald Alford  Ross Baker  Amy Alford  Matt Westhoff  Michael Grove  Ronald Reck

Jim Hendler, 5/13/03 3 Building the Semantic Web

Jim Hendler, 5/13/03 4 The Changing Web

Jim Hendler, 5/13/03 5 The Semantic Wave (Berners-Lee, 03) UMCP has been a key contributor

Jim Hendler, 5/13/03 6 XML is NOT semantics

Jim Hendler, 5/13/ Tim Berners-Lee … XML is NOT semantics

Jim Hendler, 5/13/ Tim Berners-Lee … XML is NOT semantics Xml schema is DOCUMENT checking photo has multiple subject fields photo has one physical location etc.

Jim Hendler, 5/13/ Tim Berners-Lee … XML is NOT semantics Xml schema is DOCUMENT checking photo has multiple subject fields photo has one physical location etc. WHICH SAYS NOTHING ABOUT TALKS, SUBJECTS, PEOPLE, EVENTS, etc.

Jim Hendler, 5/13/03 10 Event:title Event:WebPage rdf:type photo:Photograph, Photo:File Photo:topic :event1#event:speaker. Event1 a Event:event; date “May 7-11”, speaker Title “WWW 2002…” TimBL rdf:type w3c-ont:person; name “Tim Berners-Lee” … describes a generic conceptabout events The SEMANTICS is in the links (e.g. to ontologies)!

Jim Hendler, 5/13/03 11 From the small and structured Database schema for International Digitial Children’s Library Metadata repository ~40 classes ~25 properties (corresponding to database keys)

Jim Hendler, 5/13/03 12 To the large and complex owl:Class rdf:ID="CD80_Antigen"> CD80 Antigen P33681 NCI A member of the immunoglobulin supergene family. Co-regulator of T cell activation with CD86. Plays a critical role in autoimmune, humoral, and transplant responses. Expressed on activated T and B cells and on macrophages. (from PROW) ]]> US National Cancer Institute Ontology ~17,000 classes >1 million synonyms and definitions RDF graph >500,000 triples

Jim Hendler, 5/13/03 13 And many more DAML ontologies for: Army Thesaurus: 18,000 concepts CIA World Fact Book in DAML: 1400 classes, 2500 instances UJTLs: 326 classes, all Joint and Naval Task lists as instances Military Geofile: ~50 installation types; 56,700 Geoloc instances NIMA Geonames: 36,750 Afghanistan targets And Many more (220 in library) WordNet, NCI Cancer Thesaurus, Heads of State, Weather Conditions, CYC, UNSPC, Genealogy, baseball, Chemistry, …

Jim Hendler, 5/13/03 14 The Growing Semantic Web Jan 1, 03: Crawler finds 5.8M+ DAML statements on 20,000+ web pages Doesn’t include many instance KBs tied to ontologies Doesn’t include many very large RDFS-based KBs that include some OWL Ontology library at has 209 ontologies (March 2003) Open for anyone to create Open for anyone to use OWL is being supported by large corporation labs Web tool developers: IBM, HP, Sun, Intel, Fujitsu Content providers: Daimler-Chrysler, Nokia, Motorola, EDS, Agfa OWL is starting to be used by thesaurus developers C.f. National Cancer Institute metathesaurus released in OWL Lite CALL Thesaurus in DAML NASA thesaurus available in DAML Use of semantic markup for Web Services beginning to move beyond basic research DAML-S cited as required reading for Web Services Choreography WG DAML-S being demoed to WSDL WG tomorrow!!

Jim Hendler, 5/13/03 15 BUNCH OF SLIDES DELETED

Jim Hendler, 5/13/03 16 The Semantic Web “Revolution”

Jim Hendler, 5/13/03 17 Tools are critical Tools for marking up images, figures and other non-textual data… must be built in a way that they tie into the "business processes" of the working scientist -- that is, rather than learning a whole new set of tools, the basic web tools of the scientist must include mechanisms that make it EASIER for the scientist to produce web content (appropriately markedup) while authoring papers, performing experiments, creating and logging data, and the other day to day activities of the working researcher. Science and the Semantic Web, Hendler, 03 The same is true of the military user

Jim Hendler, 5/13/03 18 Automatically-organized portals

Jim Hendler, 5/13/03 19 New Info Management Paradigms

Jim Hendler, 5/13/03 20 And other “cool stuff”

Jim Hendler, 5/13/03 21 Tools for visualization and use A number of tools for querying, browsing and visualizing SW data are being developed

Jim Hendler, 5/13/03 22 Handle larger size/complexity Tools are now scaling as well

Jim Hendler, 5/13/03 23 PhotoSMORE: Marking up (sub)images

Jim Hendler, 5/13/03 24 And the info flows…

Jim Hendler, 5/13/03 25 And the info flows… correctly

Jim Hendler, 5/13/03 26 Putting all this together…

Jim Hendler, 5/13/03 27 …is starting to work document service database Are there any mountains in Europe bigger than Mt. Blanc?

Jim Hendler, 5/13/03 28 Wrapping/Mapping tool DAML Ontology (DAML-S) XML Schema (WSDL) Mappings for attributes Define transformation functions Manual editing if necess.

Jim Hendler, 5/13/03 29 “Ad hoc Programming” Advanced information management capabilities Discovery, Filtering, Composition

Jim Hendler, 5/13/03 30 Ad hoc programming + logic