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» Query Processing over Incomplete Autonomous Databases
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PVLDB
2010
195views more  PVLDB 2010»
14 years 8 months ago
Keyword++: A Framework to Improve Keyword Search Over Entity Databases
Keyword search over entity databases (e.g., product, movie databases) is an important problem. Current techniques for keyword search on databases may often return incomplete and i...
Dong Xin, Yeye He, Venkatesh Ganti
IJWIS
2007
181views more  IJWIS 2007»
14 years 9 months ago
Answering queries over incomplete data stream histories
Streams of data often originate from many distributed sources. A distributed stream processing system publishes such streams of data and enables queries over the streams. This allo...
Alasdair J. G. Gray, Werner Nutt, M. Howard Willia...
VLDB
2002
ACM
161views Database» more  VLDB 2002»
14 years 9 months ago
Distributed Search over the Hidden Web: Hierarchical Database Sampling and Selection
Many valuable text databases on the web have non-crawlable contents that are "hidden" behind search interfaces. Metasearchers are helpful tools for searching over many s...
Panagiotis G. Ipeirotis, Luis Gravano
ICDE
2008
IEEE
2751views Database» more  ICDE 2008»
16 years 9 months ago
Skyline Query Processing for Incomplete Data
Recently, there has been much interest in processing skyline queries for various applications that include decision making, personalized services, and search pruning. Skyline queri...
Justin J. Levandoski, Mohamed E. Khalefa, Mohamed ...
EDBT
2004
ACM
155views Database» more  EDBT 2004»
15 years 10 months ago
Processing Unions of Conjunctive Queries with Negation under Limited Access Patterns
We study the problem of answering queries over sources with limited access patterns. The problem is to decide whether a given query Q is feasible, i.e., equivalent to an executable...
Alan Nash, Bertram Ludäscher