http semnews umbc edu Sem News A Semantic
http: //semnews. umbc. edu Sem. News: A Semantic News Framework Akshay Java, Tim Finin, Sergei Nirenburg Semantacizing RSS System Architecture Fact Repository Interface Language Processing Data Aggregators 1 11 2 RSS Aggregator Browsing Facts Ontology & Instance browser Onto. Sem 3 4 News Feeds Text Search 12 RDQL Query 13 Swoogle Index 14 FR TMRs 6 5 Onto. Sem 2 OWL Dekade Editor Onto. Sem Ontology (OWL) View structured representation of RSS news stories. Ontologically linked News 9 7 Inferred 10 8 Knowledge Editor Environment Semantic RSS Triples 15 TMR Semantic Web Tools Sem. News is a framework for processing RSS summaries of news using Onto. Sem, a sophisticated NLP tool. The text meaning representation is then exported in OWL. The fact repository constructed can be explored and queried. Tracking Named Entities Browse facts not just news. Semantic Queries Semantic Alerts RDQL Find news stories by browsing through the Onto. Sem ontology. Structured queries over text converted to RDF representation. Alerts can be specified as ontological concepts/ keywords/ RDQL queries. Subscribe to the results as an RSS feed. Find stories about a specific named entity. Ontological Semantics Onto. Sem to OWL • NLP tools can. provide SW annotations that capture the text meaning. Fact Repository NL Text Lexicon Onto. Sem TMR Ontology Onto. Sem 2 OWL • Onto. Sem is a NLP system that processes text and converts them into facts. TMRs In OWL Ontology • Ontology of over 8000 concepts. • Onto. Sem 2 OWL is a rule based conversion engine that maps frame-based Onto. Sem ontology, fact repository to OWL. • Average 16 properties per concept. • Over 102189 triples generated. • Supported by a constructed world model encoded in an rich ontology. Conclusions • Migrating non webbased KR to SW representation can be lossy. Future Work • Importing facts from SW • Inference support. • Sem. News web service. • English lexicon of 45000 entries http: //ebiquity. umbc. edu/
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