320 search results - page 10 / 64 » Answering Queries from Statistics and Probabilistic Views |
SIGMOD
2007
ACM
14 years 8 months ago
2007
ACM
Sketching techniques can provide approximate answers to aggregate queries either for data-streaming or distributed computation. Small space summaries that have linearity propertie...
VLDB
1990
ACM
14 years 14 days ago
1990
ACM
A probabilistic learning model for vague queries and missing or imprecise information in databases is described. Instead of retrieving only a set of answers, our approach yields a...
DL
1999
Springer
14 years 22 days ago
1999
Springer
Existing web search engines provide users with the ability to query an off-line database of indices in order to decide on an entry point for further manual navigation. Results are...
PVLDB
2010
13 years 6 months ago
2010
Recently, there has been increasing interest in extending relational query processing to include data obtained from unstructured sources. A common approach is to use stand-alone I...
SIGMOD
2001
ACM
14 years 8 months ago
2001
ACM
We study the problem of generating e cient, equivalent rewritings using views to compute the answer to a query. We take the closed-world assumption, in which views are materialize...