#19890: Improve standardization
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Reporter: elixyre | Owner:
Type: PLEASE CHANGE | Status: new
Priority: major | Milestone: sage-7.0
Component: combinatorics | Keywords:
Merged in: | Authors: Jean-Baptiste
Reviewers: | Priez
Work issues: | Report Upstream: N/A
Commit: | Branch:
798a3fb4e5809e9aafe9c7ea0b4d13bc0b051788| u/elixyre/standardization
Stopgaps: | Dependencies:
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Improvement of the standardization computation
- the current one:
{{{
sage: sage: w = list(Words(100, 100000).random_element())
sage: sage: from sage.combinat.permutation import to_standard
sage: sage: %time sig = to_standard(w)
CPU times: user 4min 42s, sys: 2.65 s, total: 4min 45s
Wall time: 4min 53s
}}}
- using the merge sort algorithm:
{{{
sage: sage: w = list(Words(100, 100000).random_element())
sage: sage: from sage.combinat.permutation import to_standard
sage: sage: %time sig = to_standard(w)
CPU times: user 2.33 s, sys: 147 ms, total: 2.47 s
Wall time: 2.5 s
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/19890>
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