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DANTE
1999
IEEE
119views Database» more  DANTE 1999»
14 years 2 months ago
A Semantic Caching Method Based on Linear Constraints
Because performance is a crucial issue in database systems, data caching techniques have been studied in database research field, especially in client-server databases and distrib...
Yoshiharu Ishikawa, Hiroyuki Kitagawa
VLDB
1995
ACM
135views Database» more  VLDB 1995»
14 years 1 months ago
Sampling-Based Estimation of the Number of Distinct Values of an Attribute
We provide several new sampling-based estimators of the number of distinct values of an attribute in a relation. We compare these new estimators to estimators from the database an...
Peter J. Haas, Jeffrey F. Naughton, S. Seshadri, L...
JAIS
2002
120views more  JAIS 2002»
13 years 10 months ago
Information Exchange Between Humanitarian Organizations: Using the XML Schema IDML
This article explains challenges that arise when humanitarian organizations want to coordinate their development activities by means of distributed information systems. It focuses...
Stefan Hüsemann
SIGMOD
2004
ACM
150views Database» more  SIGMOD 2004»
14 years 10 months ago
When one Sample is not Enough: Improving Text Database Selection Using Shrinkage
Database selection is an important step when searching over large numbers of distributed text databases. The database selection task relies on statistical summaries of the databas...
Panagiotis G. Ipeirotis, Luis Gravano
CIKM
2009
Springer
14 years 1 months ago
Mining data streams with periodically changing distributions
Dynamic data streams are those whose underlying distribution changes over time. They occur in a number of application domains, and mining them is important for these applications....
Yingying Tao, M. Tamer Özsu