322 search results - page 22 / 65 » Least Expected Cost Query Optimization: What Can We Expect |
ICFP
2009
ACM
14 years 9 months ago
2009
ACM
During the life cycle of an XML application, both schemas and queries may change from one version to another. Schema evolutions may affect query results and potentially the validi...
KR
1992
Springer
14 years 20 days ago
1992
Springer
While the task of answering queries from an arbitrary propositional theory is intractable in general, it can typicallybe performed e ciently if the theory is Horn. This suggests t...
ALGORITHMICA
2002
13 years 8 months ago
2002
We describe a quantum black-box network computing the majority of N bits with zerosided error using only 2 3 N + O( N log( -1 log N)) queries: the algorithm returns the correct an...
ICTAI
2008
IEEE
14 years 3 months 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...
INFOCOM
2008
IEEE
14 years 3 months ago
2008
IEEE
—IEEE 802.11 WiFi equipment based wireless mesh networks have recently been proposed as an inexpensive approach to connect far-flung rural areas. Such networks are built using h...