dependency relationship
1.Then,it is revised and regulated based on basic dependency relationship between variables,basic structure between nodes and dependency analysis method to obtain a new Bayesian network structure.
2.The author of the paper observes that, formally, an indirect conditional sentence is characterized by a protasis and an indirect apodosis with a lack of a direct apodosis; semantically, there exists no contingency/dependency relationship between the protasis and the indirect apodosis.
3.An algorithm is proposed to avoid the crack between terrain blocks, set the state of the border vertices consistent forcibly, at the same time set the ancestors of these vertices active, which use the DAG (directed acyclic graphic) to decide the dependency relationship of vertices.
4.So the economic dependency among units is analyzed, and the recursion relationship of failure rate between pre and post imperfect preventive maintenance is built up concerning with the concept of age reduction factor, Furthermore, the optimal maintenance model is proposed to minimize the maintenance cost rate, and the model is subject to the reliability.
5.In this paper,based on rough set theory and relational database,the relationship between rough relational database and fuzzy relational database is analyzed systematically from functional dependency,normal form and Armstrong axiom.

