1824 search results - page 153 / 365 » Estimating query performance using class predictions |
241
click to vote
ICDE
2008
IEEE
16 years 4 months ago
2008
IEEE
Authority flow is an effective ranking mechanism for answering queries on a broad class of data. Systems have been developed to apply this principle on the Web (PageRank and topic ...
120
click to vote
PDIS
1996
IEEE
15 years 7 months ago
1996
IEEE
Accessing data from numerous widely-distributed sources poses signi cant new challenges for query optimization and execution. Congestion and failures in the network can introduce ...
145
click to vote
SIGIR
2008
ACM
15 years 3 months ago
2008
ACM
This paper addresses the issue of query refinement, which involves reformulating ill-formed search queries in order to enhance relevance of search results. Query refinement typica...
136
click to vote
CINQ
2004
Springer
15 years 8 months ago
2004
Springer
Algorithms for finding frequent itemsets fall into two broad classes: (1) algorithms that are based on non-trivial SQL statements to query and update a database, and (2) algorithms...
143
click to vote
CASCON
2008
15 years 4 months ago
2008
Today's database management systems (DBMSs) are required to handle diverse, mixed workloads and to provide differentiated levels of service to ensure that critical work takes...