Knowledge-aware identity services

Authors Klaus-Dieter Schewe
Qing Wang
Title Knowledge-aware identity services
Type article
Journal Knowledge and Information Systems
Number 2
Volume 36
ISSN 0219-3116
Month August
Year 2013
Pages 335-357
SCCH ID# 1235

The identification problem is concerned with the question, whether two objects in an application refer to the same real-world entity. In this paper the identification problem is investigated from a knowledge modelling point of view. We develop a framework of establishing knowledge-aware identity services by abstracting identity knowledge into an additional identity layer. The knowledge model in the identity service layer provides a capability for combining declarative formulae with concrete data, and thus allows us to capture domain-specific identity knowledge at flexible levels of abstraction. By adding validation constraints to the identity service we are also able to reason about inconsistency of identity knowledge. In doing so, the accuracy of identity knowledge can be improved over time, especially when utilising identity services provided by different communities in a service-oriented architecture. Our experimental study shows the effectiveness of the proposed knowledge modelling approach, and the effects of domain-specific identity knowledge on data quality control.