endoself comments on A summary of Savage's foundations for probability and utility. - Less Wrong

34 Post author: Sniffnoy 22 May 2011 07:56PM

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Comment author: endoself 07 June 2011 07:17:43PM *  0 points [-]

Conway used surreal numbers for go utilities.

Those aren't really utilities because they aren't made for taking expectations, though any totally ordered set can be embedded in the surreals, so they are perfect for choosing from possibly-infinite sets of certain outcomes.

Comment author: timtyler 07 June 2011 08:13:12PM *  0 points [-]

Checking with the definition of utility expectations do not seem critical.

Conway's move values may usefully be seen as utilities associated with possible moves.

Comment author: endoself 07 June 2011 11:01:33PM 1 point [-]

Okay, that is not the kind of utility discussed in the post, but it is still a utility.