799 search results - page 81 / 160 » Query Brokers for Distributed and Flexible Query Evaluation |
112
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BMCBI
2011
14 years 6 months ago
2011
Background: To characterize the diversity of bacterial populations in metagenomic studies, sequencing reads need to be accurately assigned to taxonomic units in a given reference ...
113
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SIGMOD
2012
ACM
13 years 2 months ago
2012
ACM
Query substitution is an important problem in information retrieval. Much work focuses on how to find substitutes for any given query. In this paper, we study how to efficiently ...
151
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VLDB
2005
ACM
16 years 3 days ago
2005
ACM
Abstract. We propose a mediator model for providing integrated and unified access to multiple taxonomy-based sources. Each source comprises a taxonomy and a database that indexes o...
FQAS
2006
Springer
15 years 3 months ago
2006
Springer
Abstract. When querying XML collections, users cannot always express their need in a precise way. Systems should therefore support vagueness at both the content and structural leve...
206
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ICDE
2004
IEEE
16 years 1 months ago
2004
IEEE
Twig queries represent the building blocks of declarative query languages over XML data. A twig query describes a complex traversal of the document graph and generates a set of el...