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ADC
1999
Springer
68views Database» more  ADC 1999»
14 years 2 months ago
A Query-sensitive Cost Model for Similarity Queries with M-tree
We introduce a cost model for the M-tree access method [Ciaccia et al., 1997] which provides estimates of CPU (distance computations) and I/O costs for the execution of similarity ...
Paolo Ciaccia, A. Nanni, Marco Patella
EJC
2010
13 years 4 months ago
Modelling a Query Space Using Associations
We all use our associative memory constantly. Words and concepts form paths that we can follow to find new related concepts; for example, when we think about a car we may associate...
Mika Timonen, Paula Silvonen, Melissa Kasari
VLDB
2007
ACM
195views Database» more  VLDB 2007»
14 years 10 months ago
Modeling and Querying Vague Spatial Objects Using Shapelets
Research in modeling and querying spatial data has primarily focused on traditional "crisp" spatial objects with exact location and spatial extent. More recent work, how...
Daniel Zinn, Jim Bosch, Michael Gertz
ICDE
1998
IEEE
70views Database» more  ICDE 1998»
14 years 11 months ago
Point-Versus Interval-Based Temporal Data Models
The association of timestamps with various data items such as tuples or attribute values is fundamental to the management of time-varying information. Using intervals in timestamp...
Michael H. Böhlen, Renato Busatto, Christian ...
DKE
1998
125views more  DKE 1998»
13 years 9 months ago
Data Models and Query Languages for Spatial Databases
The main purpose of this paper is to investigate the characteristics that distinguish spatial databases systems from traditional ones. Hereto, we give an overview of some well-kno...
Jan Paredaens, Bart Kuijpers