What Graphs are 2-Dot Product Graphs?
Electronic Notes in Discrete Mathematics(2015)
摘要
From a set of d-dimensional vectors for some integer d≥1, we obtain a d-dot product graph by letting each vector au correspond to a vertex u and by adding an edge between two vertices u and v if and only if their dot product au⋅av≥t, for some fixed, positive threshold t. Dot product graphs can be used to model social networks. To understand the position of d-dot product graphs in the landscape of graph classes, we consider the case d=2, and investigate how 2-dot product graphs relate to a number of other known graph classes.
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关键词
dot product graphs,social networks,graph classes
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