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POPL
2010
ACM
16 years 1 months ago
A Relational Modal Logic for Higher-Order Stateful ADTs
The method of logical relations is a classic technique for proving the equivalence of higher-order programs that implement the same observable behavior but employ different intern...
Derek Dreyer, Georg Neis, Andreas Rossberg, Lars B...
EMSOFT
2004
Springer
15 years 9 months ago
Making mechatronic agents resource-aware in order to enable safe dynamic resource allocation
Mechatronic systems are embedded software systems with hard real-time requirements. Predictability is of paramount importance for these systems. Thus, their design has to take the...
Sven Burmester, Matthias Gehrke, Holger Giese, Sim...
SIGMOD
1999
ACM
181views Database» more  SIGMOD 1999»
15 years 8 months ago
Approximate Computation of Multidimensional Aggregates of Sparse Data Using Wavelets
Computing multidimensional aggregates in high dimensions is a performance bottleneck for many OLAP applications. Obtaining the exact answer to an aggregation query can be prohibit...
Jeffrey Scott Vitter, Min Wang
WIDM
2003
ACM
15 years 9 months ago
XPath query transformation based on XSLT stylesheets
Whenever XML data must be shared by heterogeneous applications, transformations between different applicationspecific XML formats are necessary. The state-of-the-art method transf...
Sven Groppe, Stefan Böttcher
FUIN
2006
139views more  FUIN 2006»
15 years 4 months ago
Efficient Parallel Query Processing by Graph Ranking
In this paper we deal with the problem of finding an optimal query execution plan in database systems. We improve the analysis of a polynomial-time approximation algorithm due to M...
Dariusz Dereniowski, Marek Kubale