翻訳と辞書
Words near each other
・ trap
・ trap door
・ trap-door function
・ trash
・ trash-80
・ traveling salesman problem
・ travelling salesman problem
・ traversal
・ traverse
・ trawl
tree
・ tree transformation language
・ tree-killer
・ treet
・ treetran
・ treeware
・ trellis
・ trellis code modulation
・ tri state
・ trident


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tree : FOLDOC
tree
A directed acyclic graph; i.e. a graph wherein there is only one route between any pair of nodes, and there is a notion of "toward top of the tree" (i.e. the root node), and its opposite direction, toward the leaves. A tree with n nodes has n-1 edges.
Although maybe not part of the widest definition of a tree, a common constraint is that no node can have more than one parent. Moreover, for some applications, it is necessary to consider a node's daughter nodes to be an ordered list, instead of merely a set.
As a data structure in computer programs, trees are used in everything from {B-trees} in databases and file systems, to game trees in {game theory}, to {syntax trees} in a human or computer languages.
(1998-11-12)



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