#19049: New Hyperbolicity Algorithm
-------------------------------------+-------------------------------------
       Reporter:  borassi            |        Owner:
           Type:  enhancement        |       Status:  needs_review
       Priority:  major              |    Milestone:  sage-6.9
      Component:  graph theory       |   Resolution:
       Keywords:  Hyperbolicity      |    Merged in:
        Authors:  Michele Borassi    |    Reviewers:
Report Upstream:  N/A                |  Work issues:
         Branch:                     |       Commit:
  u/borassi/new_hyperbolicity_algorithm|  
e2fe1c11dee8d5424927eb2a002c92687536b68e
   Dependencies:                     |     Stopgaps:
-------------------------------------+-------------------------------------

Comment (by dcoudert):

 It's working very well. I have very few and minor comments
 - reduce the number of iterations of the test `for i in range(100): # long
 time`. 10 is enough.
 - replace reference [CCL12] with [CCL15]: N. Cohen, D. Coudert, A. Lancin.
 On computing the Gromov hyperbolicity. ACM Journal of Experimental
 Algorithmics, 20(1.6):1-18, 2015. [`<http://dx.doi.org/10.1145/2780652>`_]
 or [`<https://hal.inria.fr/hal-01182890>`_]
 - I think it is better to write `for b in range(D-1,-1,-1):` than `for b
 from D > b >= 0:` although the later is easier to read. see
 http://docs.cython.org/src/userguide/language_basics.html#integer-for-
 loops
 - Instead of `c = a`, `a = b` and `b = c` you can write directly `a,b =
 b,a`
 - When you `# We reset acc_bool`, it might be easier to use `memset`. This
 part has negligeable impact on the computation time anyway.

 David.

--
Ticket URL: <http://trac.sagemath.org/ticket/19049#comment:4>
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