In contrast, vertices serve as critical points of data, decisions, or locations within the graph. 5 The role of an edge is to express the type and strength of the relationship between vertices. For example, in weighted graphs, edges have values that represent the cost or distance between ...
需要一个edges的list保存以该节点为顶点的边。 在有向图里就是指出的边。 然后是 edge类, 首先需要权重,weight 然后需要from node 和 to node 表示该边的两个vertex 最后是graph类 graph类就是一个集合储存了该图的所有边和所有点。 对于点来说,我们无法直接取得一个点。 所以我们用一个hashmap来map顶点和...
In this paper we study graph parameters related to vertex-edge domination, where a vertex dominates the edges incident to it as well as the edges adjacent to these incident edges. First, we present new relationships relating theve-domination to some other domination parameters, answering in the ...
The majority of graph theory research on parameters involved with domination, independence, and irredundance has focused on either sets of vertices or sets of edges; for example, sets of vertices that dominate all other vertices or sets of edges that dominate all other edges. There has been ver...
Edge random graphs are Erdos-Renyi random graphs, vertex random graphs are generalizations of geometric random graphs, and vertex-edge random graphs generalize both. The names of these three types of random graphs describe where the randomness in the models lies: in the edges, in the vertices, ...
Let G be a graph with vertex set V (G) and edge set E(G). The vertexedge degree of the vertex v, deG(v), equals to the number of different edges that are incident to any vertex from the open neighborhood of v. Also, the edge-vertex degree of the edge e = uv, dvG(e), equ...
Graph partitioning drives graph processing in distributed, disk-based and NUMA-aware systems. A commonly used partitioning goal is to balance the number of edges per partition in conjunction with minimizing the edge or vertex cut. While this type of partitioning is computationally expensive, we obser...
, which is the least number of edges that must be removed from a graph, so it will have a gap-vertex-labelling, and prove that strgap(Kn)∈Ω(n6/5) and strgap(Kn)∈O(n3/2). Introduction In this work, all graphs are connected, simple, and finite. For a graph G with vertex ...
A sum divisor cordial labeling of a graph G with vertex set V is a bijection f from V (G) to (1, 2,..., |V (G)|) such that an edge uv is assigned the label 1 if 2 divides f (u) + f (v) and 0 otherwise, then the number of edges labeled wi... A Lourdusamy,F Pat...
题目 Assuming that a directed graph with n vertexs and e edges is represented by an adjacency list, the time complexity of deleting all edges related to a certain vertex v is (). A.O(n)B.O(e)C.O(n+e)D.O(n*e) 相关知识点: 试题来源: 解析 C 反馈 收藏 ...