Re: Misc Codec Questions....

Marco Al wrote:
> 
> Segher Boessenkool wrote:
> >> The author of this page has invented an alternative entropy-coder
> >> which has better performance than arithmetic coding in his tests.
> >
> > That's very interesting, as arithmetic coding is provable optimal
> > (under some conditions, of course;  Huffman coding is optimal under its
> > own conditions as well, of course ;) )
> 
> Its not so much just an entropy coder, but a way of modeling is an
> inherent part of the method ... its compared to with a arithmetic coder
> with a "popular" "adaptive fixed context bit-based model". The
> advantage of his method that despite the better modelling (shown by
> the compression) the computational complexity stays relatively low.

Oh okay, so you compare an arithmetic coder with a simple order-0 or
order-1 model to something with a model that better matches the data.

No surprise it performs better ;)

I'll still read it with great interest,


Segher


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