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TREC
2003
15 years 6 months ago
TREC12 HARD Track at ISCAS
Statistical model in retrieval has been shown to perform well empirically. Extended Boolean model has been widely used in business system for its easiness to be complemented and n...
Zeng Wu, Lin Du, Le Sun, Shiwei Ye
ADBIS
2000
Springer
188views Database» more  ADBIS 2000»
15 years 9 months ago
Algorithms for Rewriting Aggregate Queries Using Views
Queries involving aggregation are typical in a number of database research areas, such as data warehousing, global information systems and mobile computing. One of the main ideas ...
Sara Cohen, Werner Nutt, Alexander Serebrenik
SSDBM
2008
IEEE
149views Database» more  SSDBM 2008»
15 years 11 months ago
Query Planning for Searching Inter-dependent Deep-Web Databases
Increasingly, many data sources appear as online databases, hidden behind query forms, thus forming what is referred to as the deep web. It is desirable to have systems that can pr...
Fan Wang, Gagan Agrawal, Ruoming Jin
IJCAI
2003
15 years 6 months ago
Efficient Execution of Recursive Integration Plans
Information integration systems provide a uniform query interface to a set of sources. One of the key challenges for an information integration system is to provide maximally comp...
Snehal Thakkar, Craig A. Knoblock
161
Voted
CIKM
2004
Springer
15 years 10 months ago
Using a compact tree to index and query XML data
Indexing XML is crucial for efficient XML query processing. We propose a compact tree (Ctree) for XML indexing, which provides not only concise path summaries at group level but a...
Qinghua Zou, Shaorong Liu, Wesley W. Chu