205 search results - page 21 / 41 » Optimizing Multiple Top-K Queries over Joins |
PVLDB
2008
13 years 7 months ago
2008
We study the problem of extracting flattened tuple data from streaming, hierarchical XML data. Tuple-extraction queries are essentially XML pattern queries with multiple extractio...
WWW
2008
ACM
14 years 8 months ago
2008
ACM
Efficiently querying RDF [1] data is being an important factor in applying Semantic Web technologies to real-world applications. In this context, many efforts have been made to st...
SIGMOD
2003
ACM
14 years 7 months ago
2003
ACM
In many applications involving continuous data streams, data arrival is bursty and data rate fluctuates over time. Systems that seek to give rapid or real-time query responses in ...
FOCS
2009
IEEE
13 years 11 months ago
2009
IEEE
Given a set D = {d1, d2, ..., dD} of D strings of total length n, our task is to report the "most relevant" strings for a given query pattern P. This involves somewhat mo...
ICDE
2008
IEEE
14 years 9 months ago
2008
IEEE
Applications that monitor functions over rapidly and unpredictably changing data, express their needs as continuous queries. Our focus is on a rich class of queries, expressed as p...