—Data warehouse (DW) systems integrate data from heterogeneous sources and are used by decision makers to analyze the status and the development of an organization. Traditionally...
Abstract. We investigate the computational complexity of reasoning over various fragments of the Extended Entity-Relationship (EER) language, which includes a number of constructs:...
Alessandro Artale, Diego Calvanese, Roman Kontchak...
In this paper we address the problem of migrating instances between heterogeneous overlapping ontologies. The instance migration problem arises when one wants to reclassify a set o...
The MPSG (Message-based Part State Graph) model has been developed for the execution portion of shop-floor controllers that operate in a distributed and hierarchical control envir...
Devinder Thapa, Jaeil Park, Gi-Nam Wang, Dongmin S...
We investigate the temporal implications of information technology by examining its use in the work practices of physicians and nurses in an emergency department. We conceptualize...