329 search results - page 60 / 66 » Efficient Processing of Multiple XML Twig Queries |
VLDB
2008
ACM
14 years 7 months ago
2008
ACM
Abstract Existing spatiotemporal indexes suffer from either large update cost or poor query performance, except for the Bx -tree (the state-of-the-art), which consists of multiple ...
WAIM
2007
Springer
14 years 1 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...
IDEAS
2000
IEEE
13 years 12 months ago
2000
IEEE
Most operations of the relational algebra or SQL - like projection with duplicate elimination, join, ordering, group by and aggregations - are efficiently processed using a sorted...
SAC
2008
ACM
13 years 7 months ago
2008
ACM
Skyline queries are important due to their usefulness in many application domains. However, by increasing the number of attributes, the probability that a tuple dominates another ...
SIGMOD
2009
ACM
14 years 7 months ago
2009
ACM
Ranking queries are essential tools to process large amounts of probabilistic data that encode exponentially many possible deterministic instances. In many applications where unce...