2850 search results - page 387 / 570 » Answering Queries using Humans, Algorithms and Databases |
120
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WWW
2007
ACM
16 years 4 months ago
2007
ACM
We propose the study of visibly pushdown automata (Vpa) for processing XML documents. Vpas are pushdown automata where the input determines the stack operation, and XML documents ...
130
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EDBT
2009
ACM
15 years 8 months ago
2009
ACM
Traditional bitmap indexes are utilized as a special type of primary or clustered indexes where the queries are answered by performing fast logical operations supported by hardwar...
131
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PVLDB
2008
15 years 2 months ago
2008
The class of k Nearest Neighbor (kNN) queries is frequently used in geospatial applications. Many studies focus on processing kNN in Euclidean and road network spaces. Meanwhile, ...
143
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CIKM
2009
Springer
15 years 8 months ago
2009
Springer
Indoor spaces accommodate large populations of individuals. The continuous range monitoring of such objects can be used as a foundation for a wide variety of applications, e.g., s...
227
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ICDE
2008
IEEE
16 years 4 months ago
2008
IEEE
Abstract-- We present COLR-Tree, an abstraction layer designed to support efficient spatio-temporal queries on live data gathered from a large collection of sensors. We use COLR-Tr...