[zfec-dev] Redundancy ?

[zooko]

On Oct 23, 2008, at 19:24 PM, James Mills wrote:

> Hi,
>
> If you have k and m, how
> do you calculate the redundancy ?
>
> I've read in the README.txt that
> with m=12 and k=6 the redundancy
> is 100% ... How is this so ?

This sounds like the terminology in the README.txt might need to be  
improved.  I think it is more standard to say that if m=12 and k=6  
then there is "2 X" redundancy, meaning that the aggregate size of  
the shares is two times the size of the input.

Does that make sense?  Likewise, if you want a percentage, then  
probably the percentage that you want is "How many bytes of share  
data per 100 bytes of input data?", and the answer is 200.

Regards,

Zooko
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