22 search results - page 4 / 5 » Extensible Grouping and Aggregation for Data Reconciliation |
PVLDB
2010
14 years 4 months ago
2010
A RkNN query returns all objects whose nearest k neighbors contain the query object. In this paper, we consider RkNN query processing in the case where the distances between attri...
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PODS
2004
ACM
15 years 9 months ago
2004
ACM
Data exchange is the problem of taking data structured under a source schema and creating an instance of a target schema. Given a source instance, there may be many solutions ? ta...
PVLDB
2011
14 years 9 days ago
2011
Hadoop has become an attractive platform for large-scale data analytics. In this paper, we identify a major performance bottleneck of Hadoop: its lack of ability to colocate relat...
DGO
2007
14 years 11 months ago
2007
There has been considerable work on determining a suitable method to accomplish a satisfactory ordering of a group of objects, when there are multiple evaluation criteria. A weigh...
SRDS
2008
IEEE
15 years 3 months ago
2008
IEEE
Distributed storage systems often use data replication to mask failures and guarantee high data availability. Node failures can be transient or permanent. While the system must ge...