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123
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VLDB
1994
ACM
114views Database» more  VLDB 1994»
15 years 7 months ago
Including Group-By in Query Optimization
In existing relational database systems, processing of group-by and computation of aggregate functions are always postponed until all joins are performed. In this paper, we presen...
Surajit Chaudhuri, Kyuseok Shim
127
Voted
TKDE
2002
111views more  TKDE 2002»
15 years 3 months ago
Query Relaxation by Structure and Semantics for Retrieval of Logical Web Documents
Since WWW encourages hypertext and hypermedia document authoring (e.g. HTML or XML), Web authors tend to create documents that are composed of multiple pages connected with hyperl...
Wen-Syan Li, K. Selçuk Candan, Quoc Vu, Div...
152
Voted
ICASSP
2011
IEEE
14 years 7 months ago
Integrating frame-based and segment-based dynamic time warping for unsupervised spoken term detection with spoken queries
Rapidly increasing quantities of multimedia and spoken content today demand fast and accurate retrieval approaches for convenient browsing. The spoken documents with wide variety ...
Chun-an Chan, Lin-Shan Lee
149
Voted
ICDE
2012
IEEE
208views Database» more  ICDE 2012»
13 years 6 months ago
Fast SLCA and ELCA Computation for XML Keyword Queries Based on Set Intersection
— In this paper, we focus on efficient keyword query processing for XML data based on SLCA and ELCA semantics. We propose for each keyword a novel form of inverted list, which i...
Junfeng Zhou, Zhifeng Bao, Wei Wang, Tok Wang Ling...
ISCIS
2005
Springer
15 years 9 months ago
Recursive Lists of Clusters: A Dynamic Data Structure for Range Queries in Metric Spaces
We introduce a novel data structure for solving the range query problem in generic metric spaces. It can be seen as a dynamic version of the List of Clusters data structure of Ch´...
Margarida Mamede