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» A System for Semantic Query Optimization
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DLS
2010
204views Languages» more  DLS 2010»
15 years 1 months ago
Alias analysis for optimization of dynamic languages
Dynamic languages such as Python allow programs to be written more easily using high-level constructs such as comprehensions for queries and using generic code. Efficient executio...
Michael Gorbovitski, Yanhong A. Liu, Scott D. Stol...
AICOM
2004
100views more  AICOM 2004»
15 years 3 months ago
Query rewriting with symmetric constraints
Abstract. We address the problem of answering queries using expressive symmetric inter-schema constraints which allow to establish mappings between several heterogeneous informatio...
Christoph Koch
227
Voted
ICDE
2006
IEEE
166views Database» more  ICDE 2006»
16 years 4 months ago
WebIQ: Learning from the Web to Match Deep-Web Query Interfaces
Integrating Deep Web sources requires highly accurate semantic matches between the attributes of the source query interfaces. These matches are usually established by comparing th...
Wensheng Wu, AnHai Doan, Clement T. Yu
ICDE
2005
IEEE
105views Database» more  ICDE 2005»
16 years 4 months ago
Representing and Querying Data Transformations
Modern information systems often store data that has been transformed and integrated from a variety of sources. This integration may obscure the original source semantics of data ...
John Mylopoulos, Renée J. Miller, Yannis Ve...
210
Voted
SIGMOD
2008
ACM
150views Database» more  SIGMOD 2008»
16 years 3 months ago
Query biased snippet generation in XML search
Snippets are used by almost every text search engine to complement ranking scheme in order to effectively handle user searches, which are inherently ambiguous and whose relevance ...
Yu Huang, Ziyang Liu, Yi Chen