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Questions tagged [weighted-graph]

144 questions
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Program for weighted Subgraph with vertex having same weight in Python

Question is : Given a weighted graph G, first find a sub-graph H of G such that all vertices of H have the same weight and the number of vertices in H is maximized. Then find a minimum spanning tree(MSP) of H such that the total edge weights is…
Rishabh jain
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What kind of graph I need for Dijkstra's algorithm? C++

I am trying to learn some more stuff about graphs and Dijkstra's Algorithm, so I have a function that randomly generates a weighted undirected graph, saves in a file like this: numbers_of_vertices number_of_nodes node_a node_b…
Matei Anghel
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Efficient way to store weighted edges in Java?

A request from a noob Java beginner. I know it's a naive question, but till now I haven't found a satisfying solution. Some of the posts on stackoverflow currently either are for unweighted graphs, or involve complicated graph implementation work. I…
heklmbbsna
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What is the best way to store multiple cities with distances in Java?

I have to write a program that finds the shortest distance. I'm have a hard time figuring out whats the best way to store the data I have. I have a directed graph with the following cities : San Francisco, Houston, Charleston,New Orleans,Baton…
Rubii
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Converting edgelist to graph doesn't keep values

I trying to convert an an edgelist to a weighted graph (i.e. keeping the values in the edgelist). Here is my edgelist: Reporter.Countries Partner.Countries Year Value 1 Afghanistan Canada 2017 …
MoonS
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Create a graph from data frame with a layout base on attribute

I create a graph from a data frame. And I would like the vertices to be arranged and moved apart according to the hamming value that is contained in data.rw$Hamming. I would like some help data.rw <- structure(list(g1 = c(1, 1, 1, 1, 1, 1, 1, 1, 1,…
delaye
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How to get max_weight_matching in java

I have a Weighted and Non-Bipartite graph and would like to get the maximum weight matching. I have done the task with the python networkx library and looking for an alternative library for java. I looked into the JGraphT library but couldn't find…
Gevorg Harutyunyan
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How to get the data points of a particular bin in a weighted histogram?

I have a weighted histogram in python and I like to have all the data point of a particular bin. I use this to plot the histogram: c,n,x=plt.hist(e, bins=50, range=(-500, -400), weights=p, color='blue') e and p both have 130k data points. I like…
user13895447
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How to find the sum of all the nodes in weighted undirected graph

I want to find the sum of all the d values of this graph that are not recurring as an example, (a2 a3) and (a3 a2) are considered once graph = { 'a1': {'a2':{'d':4,'t':2,'c':10},'a3':{'d':2,'t':4,'c':40}}, 'a2': {…
sandulasanth-7
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Directed Weighted Graph with required vertices

Given: A directed, weighted graph G=(V, E), some of the vertices are red, some blue, and the rest white, weight Ti which is the maximum weight allowed to go from any vertex red vertex to any blue vertex. Problem: Create an algorithm that finds a…
rp03
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Weights of graph as length of line in matlab plot

I'm trying to construct a kind of graph in matlab: For each vertex I know its neighbours (thus, I have the edge list), and the distance between vertex-neighbour. This distance is saved as weight of the edge. So, the weights are actually the physical…
Cla
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Implementing Breath First Search in Python 3 (how to convert 'Set' to 'Dictionary'

Hi guys I am Start Learning Python. The way my Breath First Search using Dictionary Graph is wrong. I got an error and my code is graphs = { 'a': {'b': 3, 'c': 4, 'd': 7}, 'b': {'c': 1, 'f': 5}, 'c': {'f': 6, 'd': 2}, 'd': {'e': 3,…
joesimsim
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Mayavi : setting pipeline.tube radius

I'm plotting a 3D network using Mayavi, edge_size = 0.2 pts = mlab.points3d(x, y, z, scale_mode='none', scale_factor=0.1) pts.mlab_source.dataset.lines = np.array(graph.edges()) tube =…
Natasha
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Implementation of Directed Weighted Graph

Want to know if there was anything here that seems incorrect. The only suggestion I have gotten that I havent added was to fill the matrix to integer.max_value. Also the weight has to be the parameter for all edges and weight goes to 0 when we…
user13263183
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Find vertices along maximum cost path in directed graph

I have a weighted directed graph like this: I want to find the list of vertices along the maximum cost path from start to finish. In this example I should get: 'enableBrowserExtension' -> 'newWindow' -> 'newTab' -> 'startPage' -> 'typed' ->…
Ford1892
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