#15327: More minor tableau and skew_tableau optimizations, and moving out
attacking_pairs
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Reporter: darij | Owner:
Type: enhancement | Status:
Priority: major | needs_review
Component: combinatorics | Milestone: sage-5.13
Keywords: sage-combinat, tableau, | Resolution:
partition, skew tableau | Merged in:
Authors: Darij Grinberg | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: #15269 | Stopgaps:
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Comment (by tscrim):
Hey Darij,
Here's a review patch which does:
- some docstring tweaks,
- adds a method `restriction_shape()` to `skew_tableau.py` (which how it's
done is [much] faster than the direct implementation I tried),
- and does some minor speedup to the creation of `SkewPartition`.
Before:
{{{
sage: %timeit skp = SkewPartition([[3,2,1],[2,1]])
10000 loops, best of 3: 184 us per loop
sage: %timeit skp = SkewPartition([[3,2,1],[2,1]])
1000 loops, best of 3: 178 us per loop
}}}
With patch:
{{{
sage: %timeit skp = SkewPartition([[3,2,1],[2,1]])
10000 loops, best of 3: 115 us per loop
sage: %timeit skp = SkewPartition([[3,2,1],[2,1]])
1000 loops, best of 3: 112 us per loop
}}}
If you're happy with my changes, then you can go ahead and set this to
positive review.
Best,[[BR]]
Travis
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Ticket URL: <http://trac.sagemath.org/ticket/15327#comment:5>
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