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ICDE
2004
IEEE
85views Database» more  ICDE 2004»
14 years 10 months ago
Selectivity Estimation for String Predicates: Overcoming the Underestimation Problem
Queries with (equality or LIKE) selection predicates over string attributes are widely used in relational databases. However, state-of-the-art techniques for estimating selectivit...
Surajit Chaudhuri, Venkatesh Ganti, Luis Gravano
ICDE
2006
IEEE
138views Database» more  ICDE 2006»
14 years 10 months ago
SUBSKY: Efficient Computation of Skylines in Subspaces
Given a set of multi-dimensional points, the skyline contains the best points according to any preference function that is monotone on all axes. In practice, applications that req...
Yufei Tao, Xiaokui Xiao, Jian Pei
OTM
2009
Springer
14 years 3 months ago
Merging Sets of Taxonomically Organized Data Using Concept Mappings under Uncertainty
Abstract. We present a method for using aligned ontologies to merge taxonomically organized data sets that have apparently compatible schemas, but potentially different semantics f...
David Thau, Shawn Bowers, Bertram Ludäscher
ICDE
2007
IEEE
128views Database» more  ICDE 2007»
14 years 10 months ago
Substring Matching in P2P Publish/Subscribe Data Management Networks
The content-based publish/subscribe (pub/sub) paradigm for system design is becoming increasingly popular, offering unique benefits for a large number of data-intensive applicatio...
Ioannis Aekaterinidis, Peter Triantafillou
ACL
2003
13 years 10 months ago
Hierarchical Directed Acyclic Graph Kernel: Methods for Structured Natural Language Data
This paper proposes the “Hierarchical Directed Acyclic Graph (HDAG) Kernel” for structured natural language data. The HDAG Kernel directly accepts several levels of both chunk...
Jun Suzuki, Tsutomu Hirao, Yutaka Sasaki, Eisaku M...