#20840: Automatically add generic encoders/decoders to any linear code class
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Reporter: dlucas | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-7.3
Component: coding theory | Resolution:
Keywords: beginner | Merged in:
Authors: David Lucas | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/dlucas/automatically_add_generic_encoders_and_decoders_to_any_linear_code|
ad1cadd4b0c2a46d8ba4b14fa4a7dd2bc79e1842
Dependencies: | Stopgaps:
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Comment (by jsrn):
I don't think it makes sense to let all codes have `ParityCheckEncoder`,
the reason being that for any code where the default encoder is something
else, say `A`, then `ParityCheckEncoder` behaves exactly like
`SystematicEncoder`.
This is because `ParityCheckEncoder.generator_matrix` calls
`code.parity_check_matrix().right_kernel()` which always returned a matrix
in reduced row echelon form, i.e. the same systematic generator matrix
that `SystematicEncoder` uses.
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Ticket URL: <https://trac.sagemath.org/ticket/20840#comment:3>
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