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» Structural Recursion as a Query Language
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SIGMOD
2007
ACM
160views Database» more  SIGMOD 2007»
16 years 1 months ago
Supporting ranking and clustering as generalized order-by and group-by
The Boolean semantics of SQL queries cannot adequately capture the "fuzzy" preferences and "soft" criteria required in non-traditional data retrieval applicati...
Chengkai Li, Min Wang, Lipyeow Lim, Haixun Wang, K...
FORTE
1993
15 years 2 months ago
Incremental Construction Approach for Distributed System Specifications
In this paper, we propose an incremental construction approach for distributed system specifications. These specifications are structured as a parallel composition of subsystem sp...
Ferhat Khendek, Gregor von Bochmann
PVLDB
2010
135views more  PVLDB 2010»
14 years 8 months ago
QSkycube: Efficient Skycube Computation using Point-Based Space Partitioning
Skyline queries have gained considerable attention for multicriteria analysis of large-scale datasets. However, the skyline queries are known to return too many results for highdi...
Jongwuk Lee, Seung-won Hwang
FOCS
2003
IEEE
15 years 6 months ago
The Complexity of Homomorphism and Constraint Satisfaction Problems Seen from the Other Side
We give a complexity theoretic classification of homomorphism problems for graphs and, more generally, relational structures obtained by restricting the left hand side structure ...
Martin Grohe
SAIG
2001
Springer
15 years 5 months ago
Short Cut Fusion: Proved and Improved
Abstract. Short cut fusion is a particular program transformation technique which uses a single, local transformation — called the foldr-build rule — to remove certain intermed...
Patricia Johann