[EM] electoral methods - US and Europe

[Forest Simmons]

On Mon, 23 Feb 2004, Adam Tarr wrote:

<snip>
>
> Both Jefferson and Webster try to minimize the error between
> perfect proportionality and the actual representative allocation.  The
> difference is that Jeffeson only considers under-represenation an error,
> whereas Webster considers both over-representation AND under-representation
> as an error.  Adams only considers over-representation as an error.

<snip>

>
>
> As others have said, it uses something altogether different - I think they
> should switch to Webster.  The method they use is very similar to Webster,
> but it *slightly* favors small factions.
>

Huntington Hill is similar to Webster in that it considers both over and
under representation, but it splits the difference at the geometric mean
instead of the arithmetic mean.  In other words it considers percentage
error to be more relevant than the simple magnitude of the error.

Forest



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