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» On the Computation of Approximations of Database Queries
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EDBT
2008
ACM
99views Database» more  EDBT 2008»
16 years 6 months ago
Querying time-series streams
Index trees created using distance based indexing are difficult to maintain online since the distance function involved is often costly to compute. This problem is intensified whe...
Vivekanand Gopalkrishnan
GEOINFORMATICA
1998
144views more  GEOINFORMATICA 1998»
15 years 5 months ago
Approximation-Based Similarity Search for 3-D Surface Segments
The issue of ®nding similar 3-D surface segments arises in many recent applications of spatial database systems, such as molecular biology, medical imaging, CAD, and geographic i...
Hans-Peter Kriegel, Thomas Seidl
GCB
2004
Springer
91views Biometrics» more  GCB 2004»
15 years 11 months ago
A Method for Fast Approximate Searching of Polypeptide Structures in the PDB
: The main contribution of this paper is a novel approach for fast searching in huge structural databases like the PDB. The data structure is based on an adaption of the generalize...
Hanjo Täubig, Arno Buchner, Jan Griebsch
ICDE
2002
IEEE
204views Database» more  ICDE 2002»
16 years 7 months ago
Approximating a Data Stream for Querying and Estimation: Algorithms and Performance Evaluation
Obtaining fast and good quality approximations to data distributions is a problem of central interest to database management. A variety of popular database applications including,...
Sudipto Guha, Nick Koudas
ICDT
2003
ACM
94views Database» more  ICDT 2003»
15 years 11 months ago
Auditing Sum Queries
In an on-line statistical database, the query system should leave unanswered queries asking for sums that could lead to the disclosure of confidential data. To check that, every su...
Francesco M. Malvestuto, Mauro Mezzini