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DBPL
1993
Springer
141views Database» more  DBPL 1993»
14 years 1 months ago
Some Properties of Query Languages for Bags
In this paper we study the expressive power of query languages for nested bags. We de ne the ambient bag language by generalizing the constructs of the relational language of Brea...
Leonid Libkin, Limsoon Wong
KBSE
2008
IEEE
14 years 3 months ago
Using dependency model to support software architecture evolution
Evolution of software systems is characterized by inevitable changes of software and increasing software complexity, which in turn may lead to huge maintenance and development cos...
Hongyu Pei Breivold, Ivica Crnkovic, Rikard Land, ...
IWQOS
2004
Springer
14 years 2 months ago
Small world overlay P2P networks
In this paper, we consider how to “construct” and “maintain” an overlay structured P2P network based on the “smallworld paradigm”. Two main attractive properties of a ...
Ken Y. K. Hui, John C. S. Lui, David K. Y. Yau
COMPGEOM
2011
ACM
13 years 15 days ago
Zigzag persistent homology in matrix multiplication time
We present a new algorithm for computing zigzag persistent homology, an algebraic structure which encodes changes to homology groups of a simplicial complex over a sequence of sim...
Nikola Milosavljevic, Dmitriy Morozov, Primoz Skra...
MODELS
2007
Springer
14 years 3 months ago
Piecewise Modelling with State Subtypes
Abstract. Models addressing both structure and behaviour of a system are usually quite complex. Much of the complexity is caused by the necessity to distinguish between different c...
Friedrich Steimann, Thomas Kühne