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INFOCOM
2012
IEEE
11 years 11 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
TACS
2001
Springer
14 years 1 months ago
A Spatial Logic for Concurrency
We present a logic that can express properties of freshness, secrecy, structure, and behavior of concurrent systems. In addition to standard logical and temporal operators, our lo...
Luís Caires, Luca Cardelli
AAAI
2008
13 years 11 months ago
A Semantic Approach for Iterated Revision in Possibilistic Logic
In this paper, we propose a new approach for iterated revision in possibilistic logic by applying a one-step revision operator. We first argue that the set of KM postulates for re...
Guilin Qi
JAIR
2006
102views more  JAIR 2006»
13 years 8 months ago
Properties and Applications of Programs with Monotone and Convex Constraints
We study properties of programs with monotone and convex constraints. We extend to these formalisms concepts and results from normal logic programming. They include the notions of...
Lengning Liu, Miroslaw Truszczynski
EDBTW
2006
Springer
14 years 15 days ago
Spatio-temporal Aggregates over Streaming Geospatial Image Data
Geospatial image data obtained by satellites and aircraft are increasingly important to a wide range of applications, such as disaster management, climatology, and environmental m...
Jie Zhang