2853 search results - page 389 / 571 » On the Efficiency of Provenance Queries |
306
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ICDE
2003
IEEE
16 years 8 months ago
2003
IEEE
We present an index structure for managing weightedsequences in large databases. A weighted-sequence is defined as a two-dimensional structure where each element in the sequence i...
283
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ICDE
2002
IEEE
16 years 8 months ago
2002
IEEE
We investigate techniques for analysis and retrieval of object trajectories in a two or three dimensional space. Such kind of data usually contain a great amount of noise, that ma...
247
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SIGMOD
2007
ACM
16 years 6 months ago
2007
ACM
A "sparse" data set typically has hundreds or even thousands of attributes, but most objects have non-null values for only a small number of these attributes. A popular ...
282
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SIGMOD
2007
ACM
16 years 6 months ago
2007
ACM
The primary goal of data stream research is to develop space and time efficient solutions for answering continuous online summarization queries. Research efforts over the last dec...
244
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SIGMOD
2005
ACM
16 years 6 months ago
2005
ACM
We present a method to evaluate path queries based on the novel concept of partial path instances. Our method (1) maximizes performance by means of sequential scans or asynchronou...