709 search results - page 44 / 142 » Efficient Evaluation of All-Nearest-Neighbor Queries |
172
click to vote
PVLDB
2008
15 years 5 months ago
2008
In this paper we propose a novel document retrieval model in which text queries are augmented with multi-dimensional taxonomy restrictions. These restrictions may be relaxed at a ...
152
click to vote
SYRCODIS
2008
15 years 7 months ago
2008
Element constructor is one of most expensive operations of the XQuery language as it requires deep copy of the nodes which make up the content of the constructed element. In this ...
197
click to vote
ADC
2007
Springer
15 years 12 months ago
2007
Springer
XML stream processing has recently become popular for many applications such as selective dissemination of information. Several approaches have been proposed and most of them are ...
144
click to vote
ERSHOV
2006
Springer
15 years 9 months ago
2006
Springer
In this work, we present a semantic query optimization technique to improve the efficiency of the evaluation of a subset of SQL:1999 recursive queries. Using datalog notation, we c...
259
Voted
ICDE
2008
IEEE
16 years 7 months ago
2008
IEEE
Abstract-- We present COLR-Tree, an abstraction layer designed to support efficient spatio-temporal queries on live data gathered from a large collection of sensors. We use COLR-Tr...