168 search results - page 10 / 34 » Optimized Index Structures for Querying RDF from the Web |
129
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EDBT
2012
ACM
13 years 2 months ago
2012
ACM
Query optimization in RDF Stores is a challenging problem as SPARQL queries typically contain many more joins than equivalent relational plans, and hence lead to a large join orde...
213
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ICDE
2008
IEEE
16 years 1 months ago
2008
IEEE
Given a record set D and a query score function F, a top-k query returns k records from D, whose values of function F on their attributes are the highest. In this paper, we investi...
SSD
2005
Springer
15 years 5 months ago
2005
Springer
Most recent research on querying and managing data streams has concentrated on traditional data models where the data come in the form of tuples or XML data. Complex types of strea...
112
Voted
ICWE
2005
Springer
15 years 5 months ago
2005
Springer
There is an apparent need for specifying the integration of multiple knowledge sources during the design of Web Information Systems (WIS) where the actual data is often retrieved f...
190
Voted
ICDE
2005
IEEE
16 years 1 months ago
2005
IEEE
Index structures are designed to optimize search performance, while at the same time supporting efficient data updates. Although not explicit, existing index structures are typica...