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99
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SEMWEB
2005
Springer
15 years 6 months ago
Containment and Minimization of RDF/S Query Patterns
Semantic query optimization (SQO) has been proved to be quite useful in various applications (e.g., data integration, graphical query generators, caching, etc.) and has been extens...
Giorgos Serfiotis, Ioanna Koffina, Vassilis Christ...
84
Voted
WEBDB
2005
Springer
132views Database» more  WEBDB 2005»
15 years 6 months ago
On the role of composition in XQuery
Nonrecursive XQuery is known to be hard for nondeterministic exponential time. Thus it is commonly believed that any algorithm for evaluating XQuery has to require exponential amo...
Christoph Koch
84
Voted
WEBDB
2005
Springer
101views Database» more  WEBDB 2005»
15 years 6 months ago
T-SIX: An Indexing System for XML Siblings
We present a system for efficient indexed querying of XML documents, enhanced with sibling operations. R-tree index proposed in [5] has a very high cost for the following-sibling...
SungRan Cho
112
Voted
WEBDB
2005
Springer
129views Database» more  WEBDB 2005»
15 years 6 months ago
Processing Top-N Queries in P2P-based Web Integration Systems with Probabilistic Guarantees
Efficient query processing in P2P-based Web integration systems poses a variety of challenges resulting from the strict decentralization and limited knowledge. As a special probl...
Katja Hose, Marcel Karnstedt, Kai-Uwe Sattler, Dan...
WEBDB
2005
Springer
102views Database» more  WEBDB 2005»
15 years 6 months ago
An Evaluation and Comparison of Current Peer-to-Peer Full-Text Keyword Search Techniques
Current peer-to-peer (p2p) full-text keyword search techniques fall into the following categories: document-based partitioning, keyword-based partitioning, hybrid indexing, and se...
Ming Zhong, Justin Moore, Kai Shen, Amy L. Murphy