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add: football network - WIP
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‎doc/source/community_detection_guide/networks/README.md‎

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@@ -49,11 +49,32 @@ A network of friendships among male students in a small high school in Illinois
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### License
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These data can be cited as:
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> J. S. Coleman, Introduction to Mathematical Sociology, London Free Press Glencoe (1964).
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> J. S. Coleman, Introduction to Mathematical Sociology, London Free Press Glencoe (1964).
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---
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### Source
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This file was obtained from:
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https://networks.skewed.de/net/highschool#None_draw
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---
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---
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---
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### README for `football/football.gml`
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A network representation of a sporting competition. The vertices in the network represent the teams in one of the regional competitions or ‘‘conferences’’ of U.S. universities in the game of American football. Edges join pairs of teams that played one another during the 2005 football season.
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---
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### License
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These data can be cited as:
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> E. A. Leicht, M. E. J. Newman, Community Structure in Directed Networks, Physical Review Letters (2008).
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---
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### Source
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This file was built with `build_football_network.py` obtained from this paper:
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https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.100.118703

‎doc/source/community_detection_guide/networks/build_football_network.py‎

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import igraph as ig
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import os
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nodes = [
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"Pennsylvania State", "Northwestern", "Ohio State", "Minnesota",
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"Michigan", "Iowa", "Wisconsin", "Illinois", "Michigan State",
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"Purdue", "Indiana"
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]
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edges = [
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("Pennsylvania State", "Northwestern"),
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("Pennsylvania State", "Minnesota"),
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("Pennsylvania State", "Illinois"),
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("Pennsylvania State", "Purdue"),
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("Pennsylvania State", "Michigan State"),
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("Pennsylvania State", "Wisconsin"),
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("Pennsylvania State", "Ohio State"),
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("Northwestern", "Illinois"),
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("Northwestern", "Purdue"),
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("Northwestern", "Iowa"),
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("Northwestern", "Michigan State"),
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("Northwestern", "Wisconsin"),
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("Minnesota", "Purdue"),
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("Minnesota", "Indiana"),
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("Minnesota", "Michigan"),
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("Minnesota", "Michigan State"),
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("Iowa", "Minnesota"),
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("Iowa", "Illinois"),
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("Iowa", "Purdue"),
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("Iowa", "Indiana"),
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("Iowa", "Wisconsin"),
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("Ohio State", "Iowa"),
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("Ohio State", "Illinois"),
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("Ohio State", "Michigan"),
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("Ohio State", "Michigan State"),
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("Ohio State", "Indiana"),
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("Ohio State", "Northwestern"),
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("Ohio State", "Minnesota"),
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("Michigan", "Iowa"),
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("Michigan", "Michigan State"),
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("Michigan", "Indiana"),
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("Michigan", "Pennsylvania State"),
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("Michigan", "Northwestern"),
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("Wisconsin", "Indiana"),
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("Wisconsin", "Illinois"),
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("Wisconsin", "Purdue"),
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("Wisconsin", "Michigan"),
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("Wisconsin", "Minnesota"),
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("Purdue", "Illinois"),
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("Purdue", "Indiana"),
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("Purdue", "Michigan State"),
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("Michigan State", "Indiana"),
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("Michigan State", "Illinois"),
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("Indiana", "Illinois")
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]
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g = ig.Graph.TupleList(edges, directed=True)
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# Assign node names and community attributes
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g.vs["name"] = nodes
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local_path = "football/football.gml"
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script_dir = os.path.dirname(os.path.abspath(__file__))
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full_local_path = os.path.join(script_dir, local_path)
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g.write_gml(full_local_path)

‎doc/source/community_detection_guide/networks/football/football.gml‎

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Creator "igraph version 0.10.16-926-gbe53d68e0 Fri Aug 29 11:37:51 2025"
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Version 1
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graph
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[
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directed 1
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node
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[
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id 0
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name "Pennsylvania State"
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]
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node
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[
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id 1
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name "Northwestern"
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]
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node
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[
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id 2
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name "Ohio State"
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]
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node
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[
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id 3
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name "Minnesota"
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]
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node
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[
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id 4
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name "Michigan"
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]
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node
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[
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id 5
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name "Iowa"
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]
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node
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[
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id 6
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name "Wisconsin"
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]
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node
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[
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id 7
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name "Illinois"
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]
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node
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[
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id 8
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name "Michigan State"
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]
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node
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[
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id 9
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name "Purdue"
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]
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node
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[
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id 10
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name "Indiana"
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]
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edge
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[
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source 0
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target 1
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]
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edge
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[
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source 0
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target 2
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]
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edge
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source 0
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edge
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edge
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‎doc/source/community_detection_guide/notebooks/working_with_directed_networks.ipynb‎

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