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DASFAA
2004
IEEE
95views Database» more  DASFAA 2004»
13 years 8 months ago
On Incorporating Iceberg Queries in Query Processors
Iceberg queries are a special case of SQL queries involving GROUP BY and HAVING clauses, wherein the answer set is small relative to the database size. We present here a performanc...
Krishna P. Leela, Pankaj M. Tolani, Jayant R. Hari...
DASFAA
2004
IEEE
138views Database» more  DASFAA 2004»
13 years 8 months ago
Counting Relaxed Twig Matches in a Tree
Abstract. We consider the problem of accurately estimating the number of approximate XML answers for a given query, and propose an efficient method that (1) accurately computes sel...
Dongwon Lee, Divesh Srivastava
DASFAA
2004
IEEE
158views Database» more  DASFAA 2004»
13 years 8 months ago
A Cost Model for Spatial Intersection Queries on RI-Trees
Abstract. The efficient management of interval sequences represents a core requirement for many temporal and spatial database applications. With the Relational Interval Tree (RI-tr...
Hans-Peter Kriegel, Martin Pfeifle, Marco Pöt...
DASFAA
2004
IEEE
169views Database» more  DASFAA 2004»
13 years 8 months ago
Statistic Driven Acceleration of Object-Relational Space-Partitioning Index Structures
Relational index structures, as for instance the Relational Interval Tree or the Linear Quadtree, support efficient processing of queries on top of existing object-relational datab...
Hans-Peter Kriegel, Peter Kunath, Martin Pfeifle, ...
DASFAA
2004
IEEE
86views Database» more  DASFAA 2004»
13 years 8 months ago
Supporting Exploratory Queries in Databases
Users of database applications, especially in the e-commerce domain, often resort to exploratory "trial-and-error" queries since the underlying data space is huge and unf...
Abhijit Kadlag, Amol V. Wanjari, Juliana Freire, J...
DASFAA
2004
IEEE
102views Database» more  DASFAA 2004»
13 years 8 months ago
Efficient Declustering of Non-uniform Multidimensional Data Using Shifted Hilbert Curves
Abstract. Data declustering speeds up large data set retrieval by partitioning the data across multiple disks or sites and performing retrievals in parallel. Performance is determi...
Hak-Cheol Kim, Mario A. Lopez, Scott T. Leutenegge...
DASFAA
2004
IEEE
92views Database» more  DASFAA 2004»
13 years 8 months ago
Modeling Temporally Variable Transportation Networks
In this paper, a State-Based Dynamic Transportation Network (SBDTN) model is presented, which can be used to describe the spatiotemporal aspect of temporally variable transportatio...
Zhiming Ding, Ralf Hartmut Güting
DASFAA
2004
IEEE
135views Database» more  DASFAA 2004»
13 years 8 months ago
Semi-supervised Text Classification Using Partitioned EM
Text classification using a small labeled set and a large unlabeled data is seen as a promising technique to reduce the labor-intensive and time consuming effort of labeling traini...
Gao Cong, Wee Sun Lee, Haoran Wu, Bing Liu
DASFAA
2004
IEEE
142views Database» more  DASFAA 2004»
13 years 8 months ago
Ontological and Pragmatic Knowledge Management for Web Service Composition
The vision of the Semantic Web is to reduce manual discovery and usage of Web resources (documents and services) and to allow intelligent agents to automatically identify these Web...
Soon Ae Chun, Yugyung Lee, James Geller
DASFAA
2004
IEEE
125views Database» more  DASFAA 2004»
13 years 8 months ago
Reducing Communication Cost in a Privacy Preserving Distributed Association Rule Mining
Data mining is a process that analyzes voluminous digital data in order to discover hidden but useful patterns from digital data. However, discovery of such hidden patterns has sta...
Mafruz Zaman Ashrafi, David Taniar, Kate A. Smith