#16272: redesign transversal designs
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Reporter: vdelecroix | Owner: Vincent Delecroix
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.2
Component: combinatorics | Resolution:
Keywords: designs, | Merged in:
orthogona arrays | Reviewers:
Authors: Vincent Delecroix | Work issues:
Report Upstream: N/A | Commit:
Branch: public/16272 | ba89d70cda40900f7410574f2d0c3f987f5f47b8
Dependencies: #15310, #16227 | Stopgaps:
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Comment (by vdelecroix):
I can not use the current !ProjectivePlaneDesign... here are the timings:
{{{
sage: %timeit designs.ProjectivePlaneDesign(9)
1 loops, best of 3: 2.63 s per loop
sage: %timeit designs.ProjectivePlaneDesign(16) # WTF?
1 loops, best of 3: 42.3 s per loop
}}}
2 secs are reasonable but 42 secs are not and I do not want to go further.
Now with the straigthforward one I used it takes less than 1 sec:
{{{
sage: from sage.combinat.designs.block_design import
projective_plane_as_OA
sage: %timeit projective_plane_as_OA(9)
100 loops, best of 3: 5.95 ms per loop
sage: %timeit projective_plane_as_OA(16)
10 loops, best of 3: 39.5 ms per loop
}}}
I do not want either to rewrite the whole !ProjectivePlaneDesign as it is
not the purpose of that ticket. So please find a reasonable solution.
--
Ticket URL: <http://trac.sagemath.org/ticket/16272#comment:29>
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