274 search results - page 3 / 55 » Computational complexity of queries based on itemsets |
VLDB
2002
ACM
13 years 5 months ago
2002
ACM
Query optimization is a computationally intensive process, especially for complex queries. We present here a tool, called PLASTIC, that can be used by query optimizers to amortize...
ICTAI
2008
IEEE
14 years 5 days ago
2008
IEEE
Unlike simple questions, complex questions cannot be answered by simply extracting named entities. These questions require inferencing and synthesizing information from multiple d...
DAWAK
2005
Springer
13 years 11 months ago
2005
Springer
The queries defined on data warehouses are complex and use several join operations that induce an expensive computational cost. This cost becomes even more prohibitive when querie...
ICDT
2009
ACM
14 years 6 months ago
2009
ACM
The ability to flexibly compose confidence computation with the operations of relational algebra is an important feature of probabilistic database query languages. Computing confi...
HPCC
2007
Springer
13 years 12 months ago
2007
Springer
Data missing is a common problem in database query processing, which can cause bias or lead to inefficient analyses, and this problem happens more often in sensor databases. The re...