47 search results - page 1 / 10 » Sample synopses for approximate answering of group-by querie... |
EDBT
2009
ACM
13 years 7 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...
SIGMOD
1999
ACM
13 years 9 months ago
1999
ACM
In large data warehousing environments, it is often advantageous to provide fast, approximate answers to complex aggregate queries based on statistical summaries of the full data....
SSDBM
2008
IEEE
13 years 11 months ago
2008
IEEE
Random sampling is a popular technique for providing fast approximate query answers, especially in data warehouse environments. Compared to other types of synopses, random sampling...
VLDB
2001
ACM
14 years 4 months ago
2001
ACM
Approximate query processing has emerged as a costeffective approach for dealing with the huge data volumes and stringent response-time requirements of today's decision-suppo...
SIGMOD
2002
ACM
14 years 4 months ago
2002
ACM
Recent work has demonstrated the effectiveness of the wavelet decomposition in reducing large amounts of data to compact sets of wavelet coefficients (termed "wavelet synopse...