1000 search results - page 157 / 200 » Provenance for Aggregate Queries |
CHI
2002
ACM
14 years 10 months ago
2002
ACM
HANDS is a new programming system for children that was designed for usability. This paper examines the effectiveness of three features of HANDS: queries, aggregate operations, an...
EWSN
2004
Springer
14 years 9 months ago
2004
Springer
The efficient subdivision of a sensor network into uniform, mostly non-overlapping clusters of physically close nodes is an important building block in the design of efficient uppe...
WAIM
2007
Springer
14 years 4 months ago
2007
Springer
We propose DHCS, a method of distributed, hierarchical clustering and summarization for online data analysis and mining in sensor networks. Different from the acquisition and aggre...
WEA
2007
Springer
14 years 4 months ago
2007
Springer
Dynamic tree data structures maintain forests that change over time through edge insertions and deletions. Besides maintaining connectivity information in logarithmic time, they ca...
VLDB
2005
ACM
14 years 3 months ago
2005
ACM
Prior work on computing queries from materialized views has focused on views defined by expressions consisting of selection, projection, and inner joins, with an optional aggrega...