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ICDE
2004
IEEE
102views Database» more  ICDE 2004»
16 years 8 months ago
Approximate Temporal Aggregation
Temporal aggregate queries retrieve summarized information about records with time-evolving attributes. Existing approaches have at least one of the following shortcomings: (i) th...
Yufei Tao, Dimitris Papadias, Christos Faloutsos
ICDE
2003
IEEE
143views Database» more  ICDE 2003»
16 years 8 months ago
Index-Based Approximate XML Joins
XML data integration tools are facing a variety of challenges for their efficient and effective operation. Among these is the requirement to handle a variety of inconsistencies or...
Sudipto Guha, Nick Koudas, Divesh Srivastava, Ting...
ICDE
2003
IEEE
120views Database» more  ICDE 2003»
16 years 8 months ago
Broadcasting Dependent Data for Ordered Queries without Replication in a Multi-Channel Mobile Environment
In several mobile applications, the data items broadcast are dependent upon one another. However, most prior studies on broadcasting dependent data mainly consider single broadcas...
Jiun-Long Huang, Ming-Syan Chen, Wen-Chih Peng
ICDE
2001
IEEE
111views Database» more  ICDE 2001»
16 years 8 months ago
Overcoming Limitations of Sampling for Aggregation Queries
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...
Surajit Chaudhuri, Gautam Das, Mayur Datar, Rajeev...
ICDE
2001
IEEE
143views Database» more  ICDE 2001»
16 years 8 months ago
Exactly-once Semantics in a Replicated Messaging System
A distributed message delivery system can use replication to improve performance and availability. However, without safeguards, replicated messages may be delivered to a mobile de...
Yongqiang Huang, Hector Garcia-Molina