Sciweavers

3935 search results - page 379 / 787
» Database Support for Hypertext
Sort
View
SIGMOD
2003
ACM
172views Database» more  SIGMOD 2003»
16 years 4 months ago
Dynamic Sample Selection for Approximate Query Processing
In decision support applications, the ability to provide fast approximate answers to aggregation queries is desirable. One commonly-used technique for approximate query answering ...
Brian Babcock, Surajit Chaudhuri, Gautam Das
136
Voted
SIGMOD
2003
ACM
129views Database» more  SIGMOD 2003»
16 years 4 months ago
Efficient Processing of Joins on Set-valued Attributes
Object-oriented and object-relational DBMS support setvalued attributes, which are a natural and concise way to model complex information. However, there has been limited research...
Nikos Mamoulis
PODS
2002
ACM
154views Database» more  PODS 2002»
16 years 4 months ago
How to Evaluate Multiple Range-Sum Queries Progressively
Decision support system users typically submit batches of range-sum queries simultaneously rather than issuing individual, unrelated queries. We propose a wavelet based technique ...
Rolfe R. Schmidt, Cyrus Shahabi
PODS
2006
ACM
217views Database» more  PODS 2006»
16 years 4 months ago
A simpler and more efficient deterministic scheme for finding frequent items over sliding windows
In this paper, we give a simple scheme for identifying approximate frequent items over a sliding window of size n. Our scheme is deterministic and does not make any assumption on ...
Lap-Kei Lee, H. F. Ting
EDBT
2002
ACM
138views Database» more  EDBT 2002»
16 years 4 months ago
DAML+OIL: A Reason-able Web Ontology Language
Ontologies are set to play a key role in the "Semantic Web", extending syntactic interoperability to semantic interoperability by providing a source of shared and precise...
Ian Horrocks