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SIGMOD
2001
ACM
124views Database» more  SIGMOD 2001»
16 years 4 months ago
Query Optimization In Compressed Database Systems
Over the last decades, improvements in CPU speed have outpaced improvements in main memory and disk access rates by orders of magnitude, enabling the use of data compression techn...
Zhiyuan Chen, Johannes Gehrke, Flip Korn
IDEAS
2006
IEEE
109views Database» more  IDEAS 2006»
15 years 10 months ago
Multi-dimensional Histograms with Tight Bounds for the Error
Histograms are being used as non-parametric selectivity estimators for one-dimensional data. For highdimensional data it is common to either compute onedimensional histograms for ...
Linas Baltrunas, Arturas Mazeika, Michael H. B&oum...
VLDB
2005
ACM
120views Database» more  VLDB 2005»
15 years 9 months ago
Efficiently Processing Queries on Interval-and-Value Tuples in Relational Databases
With the increasing occurrence of temporal and spatial data in present-day database applications, the interval data type is adopted by more and more database systems. For an effic...
Jost Enderle, Nicole Schneider, Thomas Seidl
ECSQARU
2001
Springer
15 years 8 months ago
Reasoning about Knowledge Using Rough Sets
Abstract. In this paper, we first investigate set semantics of propositional logic in terms of rough sets and discuss how truth values of propositions (sentences) can be interpret...
Weiru Liu
IPPS
2002
IEEE
15 years 9 months ago
Monte Carlo Simulation of HIV-1 Evolution in Response to Selection by Antibodies
The persistence of human immunodeficiency virus type 1 (HIV-1) infection may be in part attributed to its ability to evolve to evade neutralizing antibody (NAb) surveillance. We h...
Jack da Silva, Austin L. Hughes