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» Instance optimal query processing in spatial networks
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GIS
2009
ACM
13 years 11 months ago
Opportunistic sampling in wireless sensor networks
In an active WSN where user queries are regularly processed, a significant proportion of nodes relay and overhear data generated by other nodes in the network. In this paper, we ...
Muhammad Umer, Egemen Tanin, Lars Kulik
SERVICES
2008
103views more  SERVICES 2008»
13 years 9 months ago
Grouping Distributed Stream Query Services by Operator Similarity and Network Locality
Distributed stream query services must simultaneously process a large number of complex, continuous queries with stringent performance requirements while utilizing distributed pro...
Sangeetha Seshadri, Bhuvan Bamba, Brian F. Cooper,...
ICDE
2008
IEEE
127views Database» more  ICDE 2008»
14 years 9 months ago
Querying Data under Access Limitations
Data sources on the web are often accessible through web interfaces that present them as relational tables, but require certain attributes to be mandatorily selected, e.g., via a w...
Andrea Calì, Davide Martinenghi
SIGMOD
2010
ACM
262views Database» more  SIGMOD 2010»
14 years 24 days ago
K-nearest neighbor search for fuzzy objects
The K-Nearest Neighbor search (kNN) problem has been investigated extensively in the past due to its broad range of applications. In this paper we study this problem in the contex...
Kai Zheng, Gabriel Pui Cheong Fung, Xiaofang Zhou
BTW
2007
Springer
136views Database» more  BTW 2007»
14 years 2 months ago
System P: Completeness-driven Query Answering in Peer Data Management Systems
Abstract: Peer data management systems (PDMS) are a highly dynamic, decentralized infrastructure for large-scale data integration. They consist of a dynamic set of autonomous peers...
Armin Roth, Felix Naumann