448 search results - page 21 / 90 » Queries and Constraints on Semi-structured Data |
PERCOM
2005
ACM
15 years 9 months ago
2005
ACM
We present the design goals and functional components of MASTAQ, a data management middleware for pervasive applications that utilize sensor data. MASTAQ allows applications to sp...
CHI
2005
ACM
15 years 10 months ago
2005
ACM
We introduce approximate query techniques for searching and analyzing two-dimensional data sets such as line or scatter plots. Our techniques allow users to explore a dataset by d...
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SIGMOD
2004
ACM
15 years 9 months ago
2004
ACM
Despite the widespread and growing use of asynchronous copies to improve scalability, performance and availability, this practice still lacks a firm semantic foundation. Applicati...
DEXA
2003
Springer
15 years 2 months ago
2003
Springer
Emerging applications using miniature electronic devices (e.g., tracking mobile objects using sensors) generate very large amounts of highly dynamic data that poses very high overh...
CIKM
2004
Springer
15 years 3 months ago
2004
Springer
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...