What is the Semantic Web A mostly pictorial

What is the Semantic Web? (A mostly pictorial tour) Prof. James Hendler@cs. umd. edu Presentations, Downloads and Demos: http: //www. cs. umd. edu/~hendler http: //www. mindswap. org July, 04

Information Convergence • Convergence not just in devices, also in “information” • Your personal information (phone, PDA, …) Calendar, photo, home page, files… • Your “professional” life (laptop, desktop, … Grid) Web site, publications, files, databases, … • Your “community” contexts (Web) Hobbies, blogs, fanfic, social networks… • The Web teaches us that people will work to share • How do we CREATE, SEARCH, and BROWSE in the non-text based parts of our lives? July, 04

Getting there: Make Web content more “machine-readable!” Lassila et al, 2002 July, 04

The Semantic Wave YOU ARE HERE (Berners-Lee, 03) July, 04

Now. • RDF, RDFS and OWL are ready for prime time • Designs are stable, implementations maturing • Major Research investment translating into application development and commercial spinoffs • Adobe 6. 0 embraces RDF • IBM releases tools, data and partnering • HP extending Jena to OWL • Tucana announces results for 1 B triple queries • Proprietary OWL ontologies for vertical markets • c. f. pharmacology, HMO/health care, . . . Soft drinks • Several new starts in SW space July, 04

Now: huge potential • Data integration identified as $100 Bs world-wide market • with significant govt interest creating a user-pull • Ontology development efforts, in OWL, aimed at information mgt ongoing in US govt include – NIST, NLM, EPA, DHS, Do. D, DOJ, FDA, NIH, USGS, NOAA • Huge potential follow-on market - EAI for the small business • making external data and info resources integrable • Could do for integration what Visicalc (excel) did for report generation July, 04

Now: Tools for tool builders • Like the pre-MOSAIC WWW… • …but, it is much easier to get started than it was even a year ago, • Parsers, APIs, triple-stores • http: //www. daml. org/tools • http: //www. w 3. org/RDF • End to end no longer takes a “miracle” • Prototype OWL website took three undergraduates about 1 month. • End user tools just starting to emerge • “Metaphors” growing July, 04

Tools for markup. . . Photo. Stuff Demo July, 04

Not tied to specific domains Photo from Grecia July, 04

Semantic Web Application Portals July, 04

Info views… July, 04

Not tied to specific domains July, 04

With Info Contexts July, 04

Shared calendars July, 04

Calendar + photos + … July, 04

Social networks: e. g. Friend of a Friend (FOAF) • Say stuff about yourself (or others) in OWL files, link to who you “know” <foaf: Person> <foaf: name>Jim Hendler</foaf: name> <foaf: title>Dr</foaf: title> <foaf: first. Name>Jim</foaf: first. Name> <foaf: surname>Hendler</foaf: surname> <foaf: mbox_sha 1 sum> be 972 c 7 a 602683 f 7 cf 3 c 7 a 1 fd 0949 c 565 debe 4 d 3 </foaf: mbox_sha 1 sum> <foaf: homepage rdf: resource="http: //www. cs. umd. edu/~hendler"/> <foaf: depiction rdf: resource="http: //www. semanticgrid. org/q-iantbljim. jpg"/> <foaf: workplace. Homepage rdf: resource="http: //owl. mindswap. org"/> <foaf: knows>http: //www. cs. umd. edu/~jen/foaf. rdf</foaf: knows> </foaf: Person> Estimates of the number of Foaf users range from 2 M-5 M July, 04

Using FOAF in other contexts Jennifer Golbeck July, 04 http: //trust. mindswap. org

Coming sooner than you may think… July, 04

… and this… July, 04

…and this? July, 04

Emerging: Semantic Web Services July, 04 Information management capabilities Discovery, Filtering, Composition

Semantics and services input xsd: complex=”oncogene” Oncogene(MYC): Found_In_Organism(Human). Gene_Has_Function(Transcriptional_Regulation). Gene_Has_Function(Gene_Transcription). In_Chromosomal_Location(8 q 24). Gene_Associated_With_Disease(Burkitts_Lymphoma). output xsd: complex=”Risk. Type” <owl: Class rdf: about="http: //annotation. semanticweb. org/iswc. daml#Risk. Indicator"> <rdfs: sub. Class. Of> <owl: Restriction> <owl: on. Property rdf: resource="http: //annotation. semanticweb. org/iswc. daml#name"/> <owl: all. Values. From rdf: resource="http: //www. w 3. org/2000/10/XMLSchema#string"/> </owl: Restriction> </rdfs: sub. Class. Of> </: Class> OWL-S grounding (coming to WSDL 2. 0) July, 04

Get a B&N price (In Euros) July, 04

Of a particular book July, 04

In its German edition? July, 04

July, 04

Later: Automated composition July, 04

Longer term? : Adding Proof July, 04

The “Policy Aware Web” July, 04

Conclusion • The Semantic Web is here • The question isn’t if, but “how much” • Semantic Web technologies have a promising future and an exciting potential • The business case is emerging • Enterprise integration on the Web • Database, image, and services as 1 st class Web citizens • Portal technology “in the small” • The future feed is exciting • Rules and Proof -> “Policy Aware” Web July, 04

MIND SWAP • Maryland Information and Network Dynamics Laboratory, Semantic Web and Agents Project • • J. Hendler B. Parsia Jennifer Golbeck Aditya Kalyanpur David Wang Daniel Krech Evren Sirin • • • Ronald Alford Jordan Katz Amy Alford Matt Westhoff Kendall Clark Nada Hashmi • Corporate Research Partners: • Fujitsu Laboratory of America, College Park • • Lockheed Martin Advanced Technology Laboratories • NTT Corp • SAIC Corp. , Kevric Corp, Top Quadrant, Tucana, Semaview Govt Funding: • US Army Research Laboratory, NSF, DARPA, Do. D, NIST, • http: //www. mindswap. org July, 04 (OWL-powered Semantic Web page)