Panos,
I had write patterson algorithm here
http://juaninf.blogspot.com.br/2013/04/function-make-div-with-id-mycell-sage.html
.


2017-03-07 9:47 GMT-03:00 Johan S. H. Rosenkilde <maill...@atuin.dk>:

> Hi Panos,
>
> > I finally implement the decoder using lattice basis reduction (using LLL)
>
> I presume you mean F[x]-lattice basis reduction, i.e. row reduction of
> F[x] matrices (the LLL is for integer matrices).
>
> > The only thing left is to reduce the execution time of the decoder by
> > finding the most efficient way to locate the errors via the error locator
> > poynomial (something better than chien search).
>
> Look up "multi-point evaluation" for asymptotically fast algorithms.
>
> > If you are interesting in Goppa codes there is a module named codinglib
> at
> > bitbucket witch is very helpful and a really great base.
>
> I know - I'm the author ;-) But thanks.
>
> Best,
> Johan
>
>
> Panos Phronimos writes:
>
> > Thanks Johan,
> >
> > I finally implement the decoder using lattice basis reduction (using LLL)
> > The only thing left is to reduce the execution time of the decoder by
> > finding the most efficient way to locate the errors via the error locator
> > poynomial (something better than chien search)
> > If you are interesting in Goppa codes there is a module named codinglib
> at
> > bitbucket witch is very helpful and a really great base.
>
>
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