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» Hierarchies and levels of reality
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APCCM
2009
13 years 8 months ago
Multi-Level Domain Modeling with M-Objects and M-Relationships
Using traditional semantic data modeling, multi-level modeling can be achieved by representing objects in different abstraction hierarchies, namely classification, aggregation and...
Bernd Neumayr, Katharina Grün, Michael Schref...
CHI
2005
ACM
14 years 7 months ago
Supporting efficient development of cognitive models at multiple skill levels: exploring recent advances in constraint-based mod
This paper presents X-PRT, a new cognitive modeling tool supporting activities ranging from interface design to basic cognitive research. X-PRT provides a graphical model developm...
Irene Tollinger, Richard L. Lewis, Michael McCurdy...
FIS
2010
13 years 5 months ago
Managing On-Demand Business Applications with Hierarchical Service Level Agreements
Business applications are facing an increasing demand for being delivered as on-demand services. Service Level Agreements (SLAs) are a common way for specifying the exact condition...
Wolfgang Theilmann, Ulrich Winkler, Jens Happe, Il...
ICCS
2004
Springer
14 years 26 days ago
Improving Generalization Level in UML Models Iterative Cross Generalization in Practice
FCA has been successfully applied to software engineering tasks such as source code analysis and class hierarchy re-organization. Most notably, FCA hematics behind the mechanism of...
Michel Dao, Marianne Huchard, Mohamed Rouane Hacen...
MLQ
2008
50views more  MLQ 2008»
13 years 7 months ago
Long Borel hierarchies
We show that there is a model of ZF in which the Borel hierarchy on the reals has length 2. This implies that 1 has countable cofinality, so the axiom of choice fails very badly i...
Arnold W. Miller