networkx.algorithms.cycles.minimum_cycle_basis¶
-
minimum_cycle_basis
(G, weight=None)[source]¶ Returns a minimum weight cycle basis for G
Minimum weight means a cycle basis for which the total weight (length for unweighted graphs) of all the cycles is minimum.
- Parameters
G (NetworkX Graph)
weight (string) – name of the edge attribute to use for edge weights
- Returns
A list of cycle lists. Each cycle list is a list of nodes
which forms a cycle (loop) in G. Note that the nodes are not
necessarily returned in a order by which they appear in the cycle
Examples
>>> G = nx.Graph() >>> nx.add_cycle(G, [0, 1, 2, 3]) >>> nx.add_cycle(G, [0, 3, 4, 5]) >>> print([sorted(c) for c in nx.minimum_cycle_basis(G)]) [[0, 1, 2, 3], [0, 3, 4, 5]]
References
[1] Kavitha, Telikepalli, et al. “An O(m^2n) Algorithm for Minimum Cycle Basis of Graphs.” http://link.springer.com/article/10.1007/s00453-007-9064-z [2] de Pina, J. 1995. Applications of shortest path methods. Ph.D. thesis, University of Amsterdam, Netherlands
See also