虽然DataStage作业设计很适合于关系型数据，但程序集很适合于分层数据。
While DataStage job design is well suited for relational data, the assembly is well suited for hierarchical data.
在软件设计中采用了自顶向下的设计思想，所有程序采用分层次模块化设计，提高了软件的可移植性。
The software design, using in the top-down design ideas, all the procedures used hierarchical modular design, improving the portability of the software.
将遗传程序设计方法应用到分类规则的挖掘上，利用具有分层结构的两类别分类问题的分类器解决多类别的分类问题。
Genetic Programming is applied to mining classification rules, it can effectively solve multiclass classification by several two-class classifiers using structural hierarchy.
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