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ICDE
2011
IEEE
238views Database» more  ICDE 2011»
12 years 11 months ago
Join queries on uncertain data: Semantics and efficient processing
— Uncertain data is quite common nowadays in a variety of modern database applications. At the same time, the join operation is one of the most important but expensive operations...
Tingjian Ge
STOC
2010
ACM
216views Algorithms» more  STOC 2010»
14 years 4 months ago
The HOM problem is decidable
We close affirmatively a question which has been open for long time: decidability of the HOM problem. The HOM problem consists in determining, given a tree homomorphism D and a re...
Guillem Godoy, Omer Giménez, Lander Ramos and Car...
WIA
2001
Springer
13 years 11 months ago
Adaptive Rule-Driven Devices - General Formulation and Case Study
A formal device is said to be adaptive whenever its behavior changes dynamically, in a direct response to its input stimuli, without interference of external agents, even its user...
João José Neto
HICSS
1999
IEEE
115views Biometrics» more  HICSS 1999»
13 years 11 months ago
Focusing on Mobility
In this paper, we motivate the importance of the field of mobile computing and survey current practical and formal approaches. We argue that the existing formalisms are not suffic...
Klaus Bergner, Radu Grosu, Andreas Rausch, Alexand...
LPAR
1999
Springer
13 years 11 months ago
Practical Reasoning for Expressive Description Logics
Abstract. Description Logics (DLs) are a family of knowledge representation formalisms mainly characterised by constructors to build complex concepts and roles from atomic ones. Ex...
Ian Horrocks, Ulrike Sattler, Stephan Tobies