Xian-Zhong Zhou

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Quality of service (QoS) model of composite services and web service selection based on QoS are currently the hot issues in the web service composition area. Service selection based on QoS, which is a globally optimal selection issue, is a NP-hard problem. Taking engine into consideration, this paper develops a QoS model for service selection in the web(More)
—The information systems with incomplete attribute values and fuzzy decisions commonly exist in practical problems. On the base of the notion of variable precision rough set model for incomplete information system and the rough set model for incomplete and fuzzy decision information system, the variable rough set model for incomplete and fuzzy decision(More)
Information security is an important feature of C4ISR system, but Federation Gateway and Federate Proxy can't resolve the security problem, so this paper adopts the methods of Gateway-Proxy designing the C4ISR simulation system. The large interacting information between federations is another feature of C4ISR simulation system and single Proxy might(More)
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