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APCCM
2008
14 years 11 months ago
2008
This paper considers conceptual modelling for three purposes namely data modelling, knowledge modelling and ontology modelling. It differentiates between the nature of the concept...
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ICOODB
2010
14 years 7 months ago
2010
Abstract. We present the data modeling concepts of Tricia, an opensource Java platform used to implement enterprise web information systems as well as social software solutions inc...
DOLAP
1999
ACM
15 years 1 months ago
1999
ACM
Modeling data warehouses is a complex task focusing, very often, into internal structures and implementation issues. In this paper we argue that, in order to accurately reflect the...
ICDCSW
2007
IEEE
15 years 4 months ago
2007
IEEE
— With the rapid growth of wireless sensor systems deployment, data quality has become a critical issue to the success of these applications. In this paper, we first raise the d...
EOR
2002
14 years 9 months ago
2002
In original data envelopment analysis (DEA) models, inputs and outputs are measured by exact values on a ratio scale. Cooper et al. [Management Science, 45 (1999) 597