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ShardPhoenix comments on Open Thread, May 19 - 25, 2014 - Less Wrong
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In a random sequence, AIXI would guess on average half of the bits. My goal was to create a specific sequence, where it couldn't guess any. Not just a random sequence, but specifically... uhm... "anti-inductive"? The exact opposite of lawful, where random is merely halfway opposed. I don't care about other possible predictors, only about AIXI.
Imagine playing rock-paper-scissors against someone who beats you all the time, whatever you do. That's worse than random. This sequence would bring the mighty AIXI to tears... but I suspect to a human observer it would merely seem pseudo-random. And is probably not very useful for other goals than making fun of AIXI.
Shouldn't AIXI include itself (for all inputs) recursively? If so I don't think your sequence is well defined.
No, AIXI isn't computable and so does not include itself as a hypothesis.
Oh, I see.