40 search results - page 2 / 8 » ICICLES: Self-Tuning Samples for Approximate Query Answering |
SIGMETRICS
2011
ACM
12 years 7 months ago
2011
ACM
The massive data streams observed in network monitoring, data processing and scientific studies are typically too large to store. For many applications over such data, we must ob...
VLDB
2001
ACM
13 years 9 months ago
2001
ACM
Estimating the number of distinct values is a wellstudied problem, due to its frequent occurrence in queries and its importance in selecting good query plans. Previous work has sh...
ICDE
2001
IEEE
14 years 6 months ago
2001
IEEE
We study the problem of approximately answering aggregation queries using sampling. We observe that uniform sampling performs poorly when the distribution of the aggregated attrib...
SIGMOD
1998
ACM
13 years 9 months ago
1998
ACM
In large data recording and warehousing environments, it is often advantageous to provide fast, approximate answers to queries, whenever possible. Before DBMSs providing highly-ac...
EDBT
2009
ACM
13 years 8 months ago
2009
ACM
With the amount of data in current data warehouse databases growing steadily, random sampling is continuously gaining in importance. In particular, interactive analyses of large d...