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spectralpartitionalgorithm's Introduction

Spectral Graph Partitioning Algorithm

What ?

This is a Python implementation of the Spectral Partitioning Algorithm and can be used to partition a graph in two communities (minimize the number of edges between the cuts and try to create communities of similar sizes).

How ?

You will need numpy (and dot if you want to generate the graph).

python3 partitioning.py

Full documentation:

$ python3 partitioning.py -h                                                                                                              (:
usage: partitioning.py [-h] [--nodes-file NODES_FILE]
                    [--output-file OUTPUT_FILE]

Compute the partition of a graph using the Spectral Partition Algorithm.

optional arguments:
-h, --help            show this help message and exit
--nodes-file NODES_FILE, -f NODES_FILE
                     the file containing the nodes
--output-file OUTPUT_FILE, -o OUTPUT_FILE
                     the filename of the communities PNG graph to be
                     written

Graph output file

This algorithm will produce a graph using dot:

Example graph

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