128 search results - page 4 / 26 » Plan Selection Based on Query Clustering |
VLDB
2005
ACM
14 years 1 months ago
2005
ACM
Cost-based query optimizers need to estimate the selectivity of conjunctive predicates when comparing alternative query execution plans. To this end, advanced optimizers use multi...
ICDE
2000
IEEE
14 years 2 days ago
2000
IEEE
We consider an architecture of mediators and wrappers for Internet accessible WebSources of limited query capability. Each call to a source is a WebSource Implementation (WSI) and...
SSDBM
2008
IEEE
14 years 2 months ago
2008
IEEE
Increasingly, many data sources appear as online databases, hidden behind query forms, thus forming what is referred to as the deep web. It is desirable to have systems that can pr...
VLDB
2001
ACM
14 years 3 days ago
2001
ACM
imizer Communication using Abstract Plans in Sybase ASE Query optimizers are error prone, due to both their nature and the increased search space that modern query processing requ...
CIKM
2009
Springer
2009
Springer
Improving retrievability of patents with cluster-based pseudo-relevance feedback documents selection
14 years 2 months ago
High findability of documents within a certain cut-off rank is considered an important factor in recall-oriented application domains such as patent or legal document retrieval. ...