hyper graph 超图
hyper graph 的基礎(chǔ)概念
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超圖數(shù)據(jù)模型hypergraph data model?(HDM)是知識(shí)圖的基礎(chǔ)(GRAKN.AI)
概念(notations):
- 超圖由非空的頂點(diǎn)集和超邊集組成(a hypergraph consists of a non-empty set of vertices and a set of hyperedges)
- 超邊是一組有限的頂點(diǎn)集合(通過(guò)它們?cè)诔呏兴缪莸奶囟ń巧珌?lái)區(qū)分)(a hyperedge is a finite set of vertices (distinguishable by specific roles they play in that hyperedge))
- 超邊本身也是一個(gè)頂點(diǎn),可以由其他超邊緣連接(a hyperedge is also a vertex itself and can be connected by other hyperedges)
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超圖(hyper graph)的邊:超邊(hyper edge),由一個(gè)頂點(diǎn)集合構(gòu)成,頂點(diǎn)數(shù)>=2(a?set?of vertices),如下圖:
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數(shù)學(xué)上的定義
假設(shè)一個(gè)超圖H=(X,E),其中:X為頂點(diǎn)集合,E為邊的集合,
subhypergraph(子超圖):將一個(gè)超圖H去掉一些頂點(diǎn)(vertices)
其中A是X的子集
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超圖的二部圖表示
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Reduced Hypergraph
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下圖來(lái)自文獻(xiàn):Zhou D, Huang J. Learning with hypergraphs: clustering, classification, and embedding[C]// International Conference on Neural Information Processing Systems. MIT Press, 2006:1601-1608.
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參考文獻(xiàn):
https://www.youtube.com/watch?v=Oy2nNPJ0oEI,
https://en.wikipedia.org/wiki/Hypergraph,
https://blog.grakn.ai/modelling-data-with-hypergraphs-edff1e12edf0,
Zhou D, Huang J. Learning with hypergraphs: clustering, classification, and embedding[C]// International Conference on Neural Information Processing Systems. MIT Press, 2006:1601-1608.
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