2853 search results - page 124 / 571 » On the Efficiency of Provenance Queries |
204
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BNCOD
2009
15 years 8 months ago
2009
We study the expressiveness of a positive fragment of path queries, denoted Path+ , on node-labeled trees documents. The expressiveness of Path+ is studied from two angles. First, ...
205
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PODS
2004
ACM
16 years 7 months ago
2004
ACM
We present a novel coding-based technique for answering spatial and spatiotemporal queries on objects moving along a system of curves on the plane such as many road networks. We h...
270
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VLDB
2007
ACM
16 years 7 months ago
2007
ACM
Many aspects of the data integration problem have been considered in the literature: how to match schemas across different data sources, how to decide when different records refer...
184
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CAISE
2003
Springer
16 years 7 days ago
2003
Springer
While current search engines seem to easily handle the size of the data available on the Internet, they cannot provide fresh results. The most up-to-date data always resides on the...
207
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TPDS
2008
15 years 7 months ago
2008
Energy efficiency is one of the most critical issues in the design of wireless sensor networks. Observing that many sensor applications for object tracking can tolerate a certain d...