Sciweavers

1500 search results - page 34 / 300
» The Importance of Data Collection for Modelling Contact Netw...
Sort
View
SIGMOD
2000
ACM
164views Database» more  SIGMOD 2000»
13 years 12 months ago
A Data Model and Data Structures for Moving Objects Databases
We consider spatio-temporal databases supporting spatial objects with continuously changing position and extent, termed moving objects databases. We formally define a data model f...
Luca Forlizzi, Ralf Hartmut Güting, Enrico Na...
LREC
2010
143views Education» more  LREC 2010»
13 years 9 months ago
A Flexible Representation of Heterogeneous Annotation Data
This paper describes a new flexible representation for the annotation of complex structures of metadata over heterogeneous data collections containing text and other types of medi...
Richard Johansson, Alessandro Moschitti
MOBIHOC
2006
ACM
14 years 7 months ago
Data storage placement in sensor networks
Data storage has become an important issue in sensor networks as a large amount of collected data need to be archived for future information retrieval. This paper introduces stora...
Bo Sheng, Qun Li, Weizhen Mao
INFOCOM
2012
IEEE
11 years 10 months ago
On the construction of data aggregation tree with minimum energy cost in wireless sensor networks: NP-completeness and approxima
—In many applications, it is a basic operation for the sink to periodically collect reports from all sensors. Since the data gathering process usually proceeds for many rounds, i...
Tung-Wei Kuo, Ming-Jer Tsai
SRDS
2008
IEEE
14 years 2 months ago
POSH: Proactive co-Operative Self-Healing in Unattended Wireless Sensor Networks
Unattended Wireless Sensor Networks (UWSNs) are composed of many small resource-constrained devices and operate autonomously, gathering data which is periodically collected by a v...
Roberto Di Pietro, Di Ma, Claudio Soriente, Gene T...