2850 search results - page 210 / 570 » Answering Queries using Humans, Algorithms and Databases |
143
Voted
AMW
2010
15 years 5 months ago
2010
In this work we present in-network techniques to improve the efficiency of spatial aggregate queries. Such queries are very common in a sensornet setting, demanding more targeted t...
189
Voted
EDBT
2008
ACM
16 years 3 months ago
2008
ACM
Data exchange is the problem of transforming data structured under a schema (called source) into data structured under a different schema (called target). The emphasis of data exc...
138
Voted
BNCOD
2004
15 years 5 months ago
2004
Abstract. We present a new application for keyword search within relational databases, which uses a novel algorithm to solve the join discovery problem by finding Memex-like trails...
134
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ICDE
2010
IEEE
16 years 3 months ago
2010
IEEE
Estimation via sampling out of highly selective join queries is well known to be problematic, most notably in online aggregation. Without goal-directed sampling strategies, samples...
211
Voted
PODS
2009
ACM
16 years 4 months ago
2009
ACM
The B-tree is a fundamental external index structure that is widely used for answering one-dimensional range reporting queries. Given a set of N keys, a range query can be answere...