Posts Tagged ‘identity management’

Challenges and Opportunities for More Meaningful and Sustainable Internet Systems

September 30, 2008

De Leenheer, P. and Christiaens, S. (2008) Challenges and Opportunities for More Meaningful and Sustainable Internet Systems. In Proc. of Future of the Internet Symposium 2008 (Vienna, Austria), LNCS, Springer


Design for a DNS of Information

Despite its technological success story, the Internet is facing a rampant growth of isolated ontologies and a massive dump of unstructured legacy data. Therefore, architecting the next generation of the Internet will require a paradigm shift that goes beyond technological excellence. This is the main hypothesis we take and defend in this paper. Main drivers behind the dynamics of this future Web 3.0 are the massive and meaningful reconciliation of disparate data sources and service discovery, and the pervasiveness of these processes in daily life and work of on-line communities. Paving our way to more meaningful and sustainable internet systems, we devise a three-dimensional problem space from which we draw challenges and methodological opportunities.  Next, based on this, we propose a DNS of Information. Finally, we substantiate our proposal with related research projects, practices, and initiatives that act as main catalysts or adopters.


Disambiguation of Natural-language Terms in Business Semantics Engineering

July 10, 2005

De Leenheer, P. and de Moor, A. (2005) Context-driven Disambiguation in Ontology Elicitation. In Shvaiko P. & Euzenat J.,(eds.), Context and Ontologies: Theory, Practice and Applications, AAAI Technical Report WS-05-01 (Pittsburgh, Pennsylvania), AAAI Press, pp. 17–24.


Illustration of the two levels in DOGMA ontology: on the left -- the lexical level, lexons are elicited from various contexts. On the right, there is the conceptual level consisting of a concept definition server. The meaning ladder in between illustrates the articulation of lexical terms into concept definitions.

Ontologies represent rich semantics in a lexical way. Lexical labels are used to identify concepts and relationships, though there is no bijective mapping between them. Phenomenons such as synonyms and homonyms exemplify this, and can result in frustrating misunderstanding and ambiguity. In the elicitation and application of ontologies, the meaning of the ontological knowledge is dependent on the context. We consider the role of context in ontology elicitation by introducing context in a concept definition server for ontology representation. We also adopt other features of context found in literature, such as packaging of knowledge, aligning elements of different contexts, and reasoning about contexts. Finally, we illustrate context-driven ontology elicitation with a real world case study.

This paper was further extended in Journal of Data Semantics. See my related blog in this. In our business semantics management approach, disambiguation forms an important but difficult exercise during the consolidation activities.