Graph-Theory | weighted graph , along with finding the shortest path
kandi X-RAY | Graph-Theory Summary
kandi X-RAY | Graph-Theory Summary
Implementation of a directed and weighted graph, along with finding the shortest path in a directed graph using breadth first search, and finding the shortest path in a weighted graph with Dikstra and Bellman Ford algorithms.
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- Prints the shortest path between source and target
- Optimized algorithm for shortest path
- Optimizes the shortest path using Bellman s algorithm
- Print the shortest path from source to target
- Calculates the shortest shortest path from a weighted graph
- Print a directed graph in depth - first search
- Print in depth first search
- Prints the shortest path between source and target to target
- Computes the shortest shortest path from source vertex to target vertex
- Prints the graph in breadth - first search
- Add a vertex to the graph
- Connect two vertices
- Connect two values
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QUESTION
I am trying to learn if in Python or R, there exist within the graph-theory related modules features that would enable one to start from a degree distribution (or expressed as a sequence once we set the number of vertices), and generate (random) graphs that satisfy the prescribed degree sequence.
As an example, we might be given the following distribution: p=(0.179,0.49,0.34)
which are the probabilities of degree values 1,2
and 3
respectively. So we can set the number of vertices, n=500,
map p
to a degree sequence deseq
list: filled with 0.179*n
times of 1,
and so on for the rest.
Any pointers towards previously discussed cases for such problems or library suggestions would be very helpful.
...ANSWER
Answered 2019-Aug-07 at 01:54I don't know how much have you already researched on the topic but there is a pretty wellknown package in R and module in Python called igraph. It might have what you seek for.
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You can use Graph-Theory like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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