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In pervasive computing, the internal requirements of multi-task concurrent real time system are analyzed, and the relevant allocation model and optimization principle are given. With respect to the features of genetic algorithm, a task-driven service allocation mechanism is designed and the experimental results demonstrate that the mechanism is effective and feasible.
Knowledge based on rough set can be utilized to ease the way for categorization on the basis of original data. The paper introduces the rough set theory and its principle algorithms. A Rough Set Toolbox is programmed to analyze the data from the score database of a self-learning system. The concepts such as the upper approximation, lower approximation, indiscernibility relation, reduction, core set,...
Simulation and analysis of protocols for network topology is an important research method in network field. The paper introduces the feature and infrastructure of ad hoc. The ad hoc network and its three protocols (AODV,DSDV,DSR) are presented in detail. The process and method of the simulation of mobile ad hoc is analyzed in aspects of objection, scheme design, environment setting and OTcl script...
NS2 is an object-oriented simulation tool to simulate and analyze network elements; it is also a powerful tool to develop new protocol and scheme. In the paper, we analyze the features and models of wireless network in details; discuss the simulation process and implementation of wireless network on the basis of NS2. Also, AODV protocol and self-defined MFlood protocol in wireless network are simulated...
Rough sets theory is applied to the service matchmaking algorithm for pervasive computing. The relevant service matchmaking algorithm model and method are presented in the paper. The decision system is built on the basis of the sample data from service resources. The evaluation indexes for service matchmaking are taken as the attributes to find out the important attributes that reflect the essential...
The hierarchy of task-computing and the decomposition strategy of complex task are analyzed according to the characteristics of task-computing in pervasive environment. The architecture relies on the semantic representation of service and content, however, the semantic representation is based on shared ontology. It can not only improve the accuracy and recall, but also realize the functions such as...
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