Continuous Semantics to Analyze Real Time Data

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Continuous Semantics to Analyze Real-Time Data

Amit Sheth, Christopher Thomas, and Pankaj Mehra • Wright State University

We’ve made significant progress in applying semantics and Semantic Web technologies in a range of domains. A relatively well-understood approach to reaping semantics’ benefits begins with formal modeling of a domain’s concepts and relationships, typically as an ontology. Then, we extract relevant facts — in the form of related entities — from the corpus of background knowledge and use them to populate the ontology. Finally, we apply the ontology to extract semantic metadata or to semantically annotate data in unseen or new corpora. Using annotations yields semanticsenhanced experiences for search, browsing, integration, personalization, advertising, analysis, discovery, situational awareness, and so on.1 This typically works well for domains that involve slowly evolving knowledge concentrated among deeply specialized domain experts and that have definable boundaries. A good example is the US National Center for Biomedical Ontologies, which has approximately 200 ontologies used for annotations, improved search, reasoning, and knowledge discovery. Concurrently, major search engines are developing and using large collections of domain-relevant entities as background knowledge, to support semantic or facet search. However, this approach has difficulties dealing with dynamic domains involved in social, mobile, and sensor webs. Here, we look at how continuous semantics can help us model those domains and analyze the related real-time data.

The Challenge of Modeling Dynamic Domains