443 search results - page 76 / 89 » Relational Approach to Logical Query Optimization of XPath |
IPPS
2007
IEEE
14 years 1 months ago
2007
IEEE
1 The unstructured Peer-to-Peer (P2P) systems usually use a “blind search” method to find the requested data object by propagating a query to a number of peers randomly. In or...
ARTDB
1997
Springer
13 years 11 months ago
1997
Springer
This paper proposes a strategy for parallel composite event detection in Active database systems (DBS). Up to now, the detection is sequential and totally synchronized, and thus p...
SIGMOD
1998
ACM
13 years 11 months ago
1998
ACM
Query optimization is an integral part of relational database management systems. One important task in query optimization is selectivity estimation, that is, given a query P, we ...
PVLDB
2010
13 years 5 months ago
2010
Violations of functional dependencies (FDs) are common in practice, often arising in the context of data integration or Web data extraction. Resolving these violations is known to...
JMLR
2010
13 years 2 months ago
2010
We study the standard retrieval task of ranking a fixed set of items given a previously unseen query and pose it as the half transductive ranking problem. The task is transductive...