[EM] "we only get one shot" (Re: RCV Challenge)

Kristofer Munsterhjelm km_elmet at t-online.de
Mon Jan 3 14:01:19 PST 2022


On 03.01.2022 18:51, Forest Simmons wrote:
> Which reminds me that "sorted margins" methods are unlikely to be
> monotone in general.
> 
> We've been using sorted margins for symmetry purposes,  but it's
> probably better to sort in both directions and then use the stronger
> beatpath as the finish order. At least in this example it would yield
> monotonicity (I'm pretty sure).

Strategy resistance (for various definitions thereof) without
monotonicity for purely ordinal (UD) methods seems to be pretty easy,
while strategy resistance plus monotonicity is very hard.

My optimization efforts suggest that it's possible, but the shape of the
solution still evades our grasp.

-km


More information about the Election-Methods mailing list