Selected Semantic Web Projects @ UMBC

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Selected Semantic Web Projects _at_ UMBC
SWOOGLE 2
Web Server
OntologyDictionary
SwoogleStatistics
SwoogleSearch
service
Web Service
IR analyzer
SWD analyzer
analysis
Ontology Dictionary
SWD Metadata
SWD Cache

• Swoogle is a crawler based metadata and search
  system for semantic web documents (SWDs) in RDF
  and OWL.
• Swoogle has indexed 230K documents with 37M RDF
  triples, defining 90K classes, 11K properties and
  5.8M instances.

digest
SWD Reader
The Web
Candidate URLs
discovery
Web Crawler
Swoogle Statistics
SemDis
Integrate multiple social networks Find trust
path and propagate trust across social networks
from multiple sources
Integrate knowledge from multiple sources
Discovering Complex Relationships in the Semantic
Web

• Design, prototype and evaluate a system
  supporting the discovery, indexing, querying,
  and ranking of complex semantic relationships on
  the Semantic Web.
• Capture and utilize provenance and trust to
  enhance relationship discovery in a distributed
  environment.
• Obtain, prune and evaluate semantic
  relationships from multiple information sources
  using provenance and trust.
• Explore its practical utility in various domains
  of interest.

• CoBrA Context Broker Architecture
• Using OWL to define ontologies for context
  modeling and reasoning
• Taking a rule based approach to interpret and
  reason about context
• Using a policy language and engine to control
  the sharing of user context

• Rei Policies for Open and Dynamic Systems
• Models deontic concepts of permissions,
  prohibitions, obligations and dispensations
• Uses meta policies for conflict resolution
• Uses speech acts for dynamic policy modification
• Models different kinds of policies Security,
  Privacy, Team formation, collaboration and
  maintenance, Conversation
• Suitable for web services, grid computing,
  pervasive computing

http//ebiquity.umbc.edu
Research partially supported by NSF, DARPA, IBM