According to the quasi paraboloid rule, a computer program was developed and the Gibbs free energy functions of some compounds in Sialon system were assessed and predicted. It makes the theoretical design of the Sial...According to the quasi paraboloid rule, a computer program was developed and the Gibbs free energy functions of some compounds in Sialon system were assessed and predicted. It makes the theoretical design of the Sialon materials possible.展开更多
According to the analysis of existing complicated functional dependencies constraint, we conclude the conditions of defining functional dependency in XML, and then we introduce the concept of the node value equality. ...According to the analysis of existing complicated functional dependencies constraint, we conclude the conditions of defining functional dependency in XML, and then we introduce the concept of the node value equality. A new path language and a new definition of functional dependencies in XML （XFD） are proposed XFD includes the relative XFD and the absolute XFD, in which absolute key and relative key are the particular cases. We focus on the logical implication and the closure problems, and propose a group of inference rules. Finally, some proofs of the correctness and completeness are given. XFD is powerful on expressing functional dependencies in XML causing data redundancy, and has a complete axiom system.展开更多
Fuzzy netal network (FNN) is a new tool for extraction of fuzzy control rules from experimental data, butno such rule can be extracted directly from small samples. This paper presents a new approach to fuzzy rules and...Fuzzy netal network (FNN) is a new tool for extraction of fuzzy control rules from experimental data, butno such rule can be extracted directly from small samples. This paper presents a new approach to fuzzy rules andmembership function for small samples i. e. clustering by the Hebb differential competition rule and extending eachitem of sample information to the control point in its factor space while BP algorithm is applied to the study of factornetwork weights in it. This approach has ben successfully applied to the simulation of rainfall prediction.展开更多
The subjection function of the fuzzy quantity is bell like,which is on the base of the theory;but during the course of the control,each fuzzy grade should be predigested into a triangle of W=4.
文摘According to the quasi paraboloid rule, a computer program was developed and the Gibbs free energy functions of some compounds in Sialon system were assessed and predicted. It makes the theoretical design of the Sialon materials possible.
基金Supported by the National Natural Science Foundation of China (60573089)the National High Technology Research and Development Program of China (2006AA09Z139)
文摘According to the analysis of existing complicated functional dependencies constraint, we conclude the conditions of defining functional dependency in XML, and then we introduce the concept of the node value equality. A new path language and a new definition of functional dependencies in XML （XFD） are proposed XFD includes the relative XFD and the absolute XFD, in which absolute key and relative key are the particular cases. We focus on the logical implication and the closure problems, and propose a group of inference rules. Finally, some proofs of the correctness and completeness are given. XFD is powerful on expressing functional dependencies in XML causing data redundancy, and has a complete axiom system.
文摘Fuzzy netal network (FNN) is a new tool for extraction of fuzzy control rules from experimental data, butno such rule can be extracted directly from small samples. This paper presents a new approach to fuzzy rules andmembership function for small samples i. e. clustering by the Hebb differential competition rule and extending eachitem of sample information to the control point in its factor space while BP algorithm is applied to the study of factornetwork weights in it. This approach has ben successfully applied to the simulation of rainfall prediction.
文摘The subjection function of the fuzzy quantity is bell like,which is on the base of the theory;but during the course of the control,each fuzzy grade should be predigested into a triangle of W=4.
