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117
Voted
EDBT
2009
ACM
156views Database» more  EDBT 2009»
15 years 6 months ago
Secondary bitmap indexes with vertical and horizontal partitioning
Traditional bitmap indexes are utilized as a special type of primary or clustered indexes where the queries are answered by performing fast logical operations supported by hardwar...
Guadalupe Canahuate, Tan Apaydin, Ahmet Sacan, Hak...
DOLAP
2010
ACM
14 years 11 months ago
Using ontologies to discover fact IDs
Object identification is a crucial step in most information systems. Nowadays, we have many different ways to identify entities such as surrogates, keys and object identifiers. Ho...
Alberto Abelló, Oscar Romero
114
Voted
AMAI
2008
Springer
15 years 2 months ago
Set based logic programming
In a previous paper [BMR01], the authors showed that the mechanism underlying Logic Programming can be extended to handle the situation where the atoms are interpreted as subsets o...
Howard A. Blair, Victor W. Marek, Jeffrey B. Remme...
PLDI
2011
ACM
14 years 4 months ago
Separation logic + superposition calculus = heap theorem prover
Program analysis and verification tools crucially depend on the ability to symbolically describe and reason about sets of program behaviors. Separation logic provides a promising...
Juan Antonio Navarro Pérez, Andrey Rybalche...
PEPM
2010
ACM
15 years 10 months ago
Optimizing relational algebra operations using generic equivalence discriminators and lazy products
We show how to efficiently evaluate generic map-filter-product queries, generalizations of select-project-join (SPJ) queries in relational algebra, based on a combination of two...
Fritz Henglein