johnswentworth comments on An Intuitive Explanation of Solomonoff Induction - Less Wrong

53 Post author: Alex_Altair 11 July 2012 08:05AM

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Comment author: johnswentworth 09 July 2012 01:54:55AM 2 points [-]

Does anyone know if the probabilities output by Solomonoff Induction have been proven to converge? There could be as many as O(2^n) hypotheses of length n, each of which get a probability proportional to 2^-n. Once you sum that over all n, it doesn't converge, therefore the probability can't be normalized unless there's some other constraint on the number of hypotheses of length n consistent with the data. Does anyone know of such a constraint?

Comment author: Peter_de_Blanc 09 July 2012 02:46:53AM 6 points [-]

No hypothesis is a prefix of another hypothesis.

Comment author: Alex_Altair 09 July 2012 04:08:24AM 0 points [-]

Peter is right. It's a detail you can find in Universal Artificial Intelligence.