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» Querying Priced Information in Databases: The Conjunctive Ca...
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INFOSCALE
2009
ACM
15 years 2 months ago
CAWA: Continuous Approximate Where-About Queries
With the current proliferation of wireless networks and mobile device technologies, the management of moving object databases to facilitate queries over these domains has been exte...
Alexander J. Aved, Kien A. Hua, Antoniya Petkova
75
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EDBT
1998
ACM
124views Database» more  EDBT 1998»
15 years 1 months ago
Maintaining Temporal Views over Non-Temporal Information Sources for Data Warehousing
An importantuse of data warehousing is to provide temporal views over the history of source data that may itself be non-temporal. While recent work in view maintenance is applicab...
Jun Yang 0001, Jennifer Widom
DBA
2004
140views Database» more  DBA 2004»
14 years 11 months ago
A Tool for Transforming Conceptual Schemas of Spatio-Temporal Databases with Multiple Representation
Nowadays, classical conceptual models (such as ER or UML) are used for designing database applications. These classical conceptual models usually come with associated CASE tools a...
Mohammed Minout, Christine Parent, Esteban Zim&aac...
PODS
2008
ACM
221views Database» more  PODS 2008»
15 years 9 months ago
A generic flow algorithm for shared filter ordering problems
We consider a fundamental flow maximization problem that arises during the evaluation of multiple overlapping queries defined on a data stream, in a heterogenous parallel environm...
Zhen Liu, Srinivasan Parthasarathy 0002, Anand Ran...
SIGIR
2002
ACM
14 years 9 months ago
Two-stage language models for information retrieval
The optimal settings of retrieval parameters often depend on both the document collection and the query, and are usually found through empirical tuning. In this paper, we propose ...
ChengXiang Zhai, John D. Lafferty