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階層構造
1. layered structure; layered system; stratification; hierarchical structure
2. HierarchyA hierarchy is an arrangement of items (objects, names, values, categories, etc. ) in which the items are represented as being "above," "below," or "at the same level as" one another. Abstractly, a hierarchy is simply an ordered set or an acyclic directed graph. A hierarchy (sometimes abbreviated HR) can link entities either directly or indirectly, and either vertically or horizontally.
Read “Hierarchy” on English Wikipedia
Read “階層構造” on Japanese Wikipedia
Read “Hierarchy” on DBpedia
Read “Hierarchy” on English Wikipedia
Read “階層構造” on Japanese Wikipedia
Read “Hierarchy” on DBpedia
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