[EM] Approval strategy at Russ´s website

[MIKE OSSIPOFF]

What Russ refers to as Weber´s Approval formula, or the Approval formula, 
actuallly describes the Better-Than-Expectation strategy that Forest defined 
a long time ago on EM. It was demonstrated on EM that, as I´ve said, by some 
reasonable approximations, Better-Than-Expectation becomes the same as the 
strategy method that actually was described by Weber, the strategy of voting 
for candidates whose strategic value is positive, using Weber´s strategic 
value formula.

Weber´s strategic value formula is different from what is at Russ´s website.

Most agree that the use of Better-Than-Expectation won´t involve calculating 
your expectation based on all the candidates´win-probabilities and their 
utilities. Rather, the convenient way to use Better-Than-Expectation is to 
simply ask if a particular candidate is better than what you expect from the 
election. Is that candidate so good that you´d rather have him/her in office 
rather than holding the election? If so, then vote for him/her.

As I said, it was demonstrated on EM that, with a few reasonable 
approximations, and when your estimated expectation is the same as that 
calculated from the candidates´ Pi  and their utilities as perceived by you, 
Better-Than-Expectation results in the same Approval ballot as does Weber´s 
strategy of voting for the candidates with positive strategic value.

I wrote a demonstration of that, for 4 candidates, at Russ´s website.

Better than expectation is one of the Approval strategies that I listed in 
my recent posting about the choce between Approval strategies.

Mike Ossipoff

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