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» Answering imprecise database queries: a novel approach
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SIGMOD
2002
ACM
134views Database» more  SIGMOD 2002»
14 years 7 months ago
Wavelet synopses with error guarantees
Recent work has demonstrated the effectiveness of the wavelet decomposition in reducing large amounts of data to compact sets of wavelet coefficients (termed "wavelet synopse...
Minos N. Garofalakis, Phillip B. Gibbons
SIGMOD
2004
ACM
198views Database» more  SIGMOD 2004»
14 years 7 months ago
Secure XML Querying with Security Views
The prevalent use of XML highlights the need for a generic, flexible access-control mechanism for XML documents that supports efficient and secure query access, without revealing ...
Wenfei Fan, Chee Yong Chan, Minos N. Garofalakis
VLDB
2000
ACM
155views Database» more  VLDB 2000»
13 years 11 months ago
ICICLES: Self-Tuning Samples for Approximate Query Answering
Approximate query answering systems provide very fast alternatives to OLAP systems when applications are tolerant to small errors in query answers. Current sampling-based approach...
Venkatesh Ganti, Mong-Li Lee, Raghu Ramakrishnan
CAISE
2010
Springer
13 years 8 months ago
Supporting Semantic Search on Heterogeneous Semi-structured Documents
This paper presents SHIRI-Querying 3 , an approach for semantic search on semi-structured documents. We propose a solution to tackle incompleteness and imprecision of semantic anno...
Yassine Mrabet, Nacéra Bennacer, Nathalie P...
ICDE
2008
IEEE
137views Database» more  ICDE 2008»
14 years 9 months ago
Multiple Materialized View Selection for XPath Query Rewriting
We study the problem of answering XPATH queries using multiple materialized views. Despite the efforts on answering queries using single materialized view, answering queries using ...
Byron Choi, Jeffrey Xu Yu, Kam-Fai Wong, M. Tamer ...