#19031: New Algorithm for Top-K Closeness Centralities
-------------------------------------+-------------------------------------
Reporter: borassi | Owner:
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-6.9
Component: graph theory | Resolution:
Keywords: Closeness | Merged in:
Centrality, top-k | Reviewers: David Coudert
Authors: Michele Borassi | Work issues:
Report Upstream: N/A | Commit:
Branch: | ced875f0b1fba123a0921d5937f894cc8fe41b1e
u/borassi/new_algorithm_for_top_k_closeness_centralities| Stopgaps:
Dependencies: #19007,#19014 |
-------------------------------------+-------------------------------------
Changes (by vbraun):
* status: positive_review => needs_work
Comment:
On 32-bit Linux:
{{{
sage -t --long src/sage/graphs/centrality.pyx
**********************************************************************
File "src/sage/graphs/centrality.pyx", line 588, in
sage.graphs.centrality.centrality_closeness_top_k
Failed example:
centrality_closeness_top_k(g, 5, 1)
Expected:
Final performance ratio: 0.766666666667
[(0.36, 5),
(0.36, 4),
(0.3333333333333333, 6),
(0.3333333333333333, 3),
(0.29032258064516125, 2)]
Got:
Final performance ratio: 0.805555555556
[(0.36, 5),
(0.36, 4),
(0.3333333333333333, 6),
(0.3333333333333333, 3),
(0.29032258064516125, 7)]
**********************************************************************
1 item had failures:
1 of 40 in sage.graphs.centrality.centrality_closeness_top_k
[51 tests, 1 failure, 0.16 s]
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/19031#comment:18>
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