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» Answering approximate queries over autonomous web databases
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DEXA
2010
Springer
180views Database» more  DEXA 2010»
13 years 8 months ago
Approximate Instance Retrieval on Ontologies
With the development of more expressive description logics (DLs) for the Web Ontology Language OWL the question arises how we can properly deal with the high computational complexi...
Tuvshintur Tserendorj, Stephan Grimm, Pascal Hitzl...
PODS
2006
ACM
122views Database» more  PODS 2006»
14 years 7 months ago
Space- and time-efficient deterministic algorithms for biased quantiles over data streams
Skew is prevalent in data streams, and should be taken into account by algorithms that analyze the data. The problem of finding "biased quantiles"-- that is, approximate...
Graham Cormode, Flip Korn, S. Muthukrishnan, Dives...
ERCIMDL
2005
Springer
124views Education» more  ERCIMDL 2005»
14 years 1 months ago
A Comparison of On-Line Computer Science Citation Databases
This paper examines the difference and similarities between the two on-line computer science citation databases DBLP and CiteSeer. The database entries in DBLP are inserted manual...
Vaclav Petricek, Ingemar J. Cox, Hui Han, Isaac G....
ICDE
2009
IEEE
216views Database» more  ICDE 2009»
13 years 5 months ago
Continuous Subgraph Pattern Search over Graph Streams
Search over graph databases has attracted much attention recently due to its usefulness in many fields, such as the analysis of chemical compounds, intrusion detection in network t...
Changliang Wang, Lei Chen 0002
SIGMOD
2004
ACM
150views Database» more  SIGMOD 2004»
14 years 7 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