37 search results - page 2 / 8 » Robust Cardinality and Cost Estimation for Skyline Operator |
TKDE
2011
12 years 11 months ago
2011
— Collaborative filtering (CF) systems exploit previous ratings and similarity in user behavior to recommend the top-k objects/records which are potentially most interesting to t...
ICDE
2010
IEEE
13 years 11 months ago
2010
IEEE
— We demonstrate ROX, a run-time optimizer of XQueries, that focuses on finding the best execution order of XPath steps and relational joins in an XQuery. The problem of join or...
ICDE
2009
IEEE
14 years 6 months ago
2009
IEEE
We introduce a framework for reordering join pipelines at runtime in a database system. This framework incorporates novel techniques for simulating the execution of a join pipeline...
VLDB
2001
ACM
13 years 9 months ago
2001
ACM
Most modern DBMS optimizers rely upon a cost model to choose the best query execution plan (QEP) for any given query. Cost estimates are heavily dependent upon the optimizer’s e...
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
Ranking is an important property that needs to be fully supported by current relational query engines. Recently, several rank-join query operators have been proposed based on rank...