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292
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SIGMOD
2009
ACM
16 years 7 months ago
2009
ACM
With the proliferation of the RDF data format, engines for RDF query processing are faced with very large graphs that contain hundreds of millions of RDF triples. This paper addre...
246
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SIGMOD
2005
ACM
16 years 7 months ago
2005
ACM
There has been an information explosion in fields of science such as high energy physics, astronomy, environmental sciences and biology. There is a critical need for automated sys...
254
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SIGMOD
2005
ACM
16 years 7 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...
198
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SIGMOD
2005
ACM
16 years 7 months ago
2005
ACM
We study a problem of mining frequently occurring periodic patterns with a gap requirement from sequences. Given a character sequence S of length L and a pattern P of length l, we...
193
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SIGMOD
2002
ACM
16 years 7 months ago
2002
ACM
Ontologies in current computer science parlance are computer based resources that represent agreed domain semantics. Unlike data models, the fundamental asset of ontologies is the...