328 search results - page 28 / 66 » Using Meta-reasoning to Improve the Performance of Case-Base... |
PVLDB
2010
13 years 6 months ago
2010
The need to improve a suboptimal execution plan picked by the query optimizer for a repeatedly run SQL query arises routinely. Complex expressions, skewed or correlated data, and ...
FUIN
2006
13 years 7 months ago
2006
In this paper we deal with the problem of finding an optimal query execution plan in database systems. We improve the analysis of a polynomial-time approximation algorithm due to M...
ICDE
2011
IEEE
12 years 11 months ago
2011
IEEE
— In this paper, we study the problem of efficiently computing multiple aggregation queries over a data stream. In order to share computation, prior proposals have suggested ins...
KER
2007
13 years 7 months ago
2007
AI planning solves the problem of generating a correct and efficient ordered set of instantiated activities, from a knowledge base of generic actions, which when executed will tra...
WSC
2000
13 years 9 months ago
2000
Business processes are increasingly key to the success of companies in the service industry. It is important that these processes are designed and maintained to deliver the most c...