641 search results - page 41 / 129 » Temporal Queries in OLAP |
131
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SSD
2009
Springer
15 years 8 months ago
2009
Springer
We introduce TOQL, a query language for querying time information in ontologies. TOQL is a high level query language that handles ontologies almost like relational databases. Queri...
162
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ICDE
2009
IEEE
15 years 1 months ago
2009
IEEE
Many real world applications such as sensor networks and other monitoring applications naturally generate probabilistic streams that are highly correlated in both time and space. ...
274
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Publication
This paper presents a framework for building and continuously maintaining spatio-temporal histograms (ST-Histograms, for short). ST-Histograms are used for selectivity estimation o...
236
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GIS
2009
ACM
16 years 5 months ago
2009
ACM
With the recent advancements and wide usage of location detection devices, large quantities of data are collected by GPS and cellular technologies in the form of trajectories. Whi...
121
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SIGMOD
1998
ACM
15 years 8 months ago
1998
ACM
Caching has been proposed (and implemented) by OLAP systems in order to reduce response times for multidimensional queries. Previous work on such caching has considered table leve...