翻訳と辞書
Words near each other
・ Counting Crows discography
・ Counting Days (film)
・ Counting Down
・ Counting Down the Days
・ Counting Down the Days (song)
・ Counting efficiency
・ Counting Hallways to the Left
・ Counting Heads
・ Counting house
・ Counting measure
・ Counting method
・ Counting of the Omer
・ Counting Other Peoples Money
・ Counting points on elliptic curves
・ Counting problem
Counting problem (complexity)
・ Counting process
・ Counting quantification
・ Counting Rod Numerals
・ Counting rods
・ Counting sheep
・ Counting Sheep (album)
・ Counting Sheep (disambiguation)
・ Counting Sheep (Safia song)
・ Counting single transferable votes
・ Counting sort
・ Counting Stars
・ Counting Stars (album)
・ Counting Stars (disambiguation)
・ Counting the Beat


Dictionary Lists
翻訳と辞書 辞書検索 [ 開発暫定版 ]
スポンサード リンク

Counting problem (complexity) : ウィキペディア英語版
Counting problem (complexity)

In computational complexity theory and computability theory, a counting problem is a type of computational problem. If ''R'' is a search problem then
:c_R(x)=\vert\\vert \,
is the corresponding counting function and
:\#R=\
denotes the corresponding counting problem.
Note that ''cR'' is a search problem while #''R'' is a decision problem, however ''cR'' can be ''C'' Cook reduced to #''R'' (for appropriate ''C'') using a binary search (the reason #''R'' is defined the way it is, rather than being the graph of ''cR'', is to make this binary search possible).
==Counting complexity class==
If ''NC'' is a complexity class associated with non-deterministic machines then ''#C'' = is the set of counting problems associated with each search problem in ''NC''. In particular, #P is the class of counting problems associated with NP search problems.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Counting problem (complexity)」の詳細全文を読む



スポンサード リンク
翻訳と辞書 : 翻訳のためのインターネットリソース

Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.