#75 – Marcus Hutter: Universal Artificial Intelligence, AIXI, and AGI
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About this episode
<p>Marcus Hutter is a senior research scientist at DeepMind and professor at Australian National University. Throughout his career of research, including with Jürgen Schmidhuber and Shane Legg, he has proposed a lot of interesting ideas in and around the field of artificial general intelligence, including the development of the AIXI model which is a mathematical approach to AGI that incorporates ideas of Kolmogorov complexity, Solomonoff induction, and reinforcement learning.</p>
<p>EPISODE LINKS:<br />
Hutter Prize: <a href="http://prize.hutter1.net">http://prize.hutter1.net</a><br />
Marcus web: <a href="http://www.hutter1.net">http://www.hutter1.net</a><br />
Books mentioned:<br />
– Universal AI: <a href="https://amzn.to/2waIAuw">https://amzn.to/2waIAuw</a><br />
– AI: A Modern Approach: <a href="https://amzn.to/3camxnY">https://amzn.to/3camxnY</a><br />
– Reinforcement Learning: <a href="https://amzn.to/2PoANj9">https://amzn.to/2PoANj9</a><br />
– Theory of Knowledge: <a href="https://amzn.to/3a6Vp7x">https://amzn.to/3a6Vp7x</a></p>
<p><span style="font-weight: 400;">This conversation is part of the Artificial Intelligence podcast.</span> If you would like to get more information about this podcast go to <a href="https://lexfridman.com/ai">https://lexfridman.com/ai</a> or connect with @lexfridman on <a href="https://twitter.com/lexfridman">Twitter</a>, <a href="https://www.linkedin.com/in/lexfridman/">LinkedIn</a>, <a href="https://www.facebook.com/lexfridman">Facebook</a>, <a href="https://medium.com/@lexfridman">Medium</a>, or <a href="https://www.youtube.com/lexfridman">YouTube</a> where you can watch the video versions of these conversations. If you enjoy the podcast, please rate it 5 stars on <a href="https://podcasts.apple.com/us/podcast/artificial-intelligence/id1434243584">Apple Podcasts</a>, follow on <a href="https://open.spotify.com/show/2MAi0BvDc6GTFvKFPXnkCL">Spotify</a>, or support it on <a href="https://www.patreon.com/lexfridman">Patreon</a>.</p>
<p>This episode is presented by Cash App. Download it (<a href="https://apps.apple.com/us/app/cash-app/id711923939">App Store</a>, <a href="https://play.google.com/store/apps/details?id=com.squareup.cash&hl=en_US">Google Play</a>), use code “LexPodcast”. </p>
<p>Here’s the outline of the episode. On some podcast players you should be able to click the timestamp to jump to that time.</p>
<p>OUTLINE:<br />
00:00 – Introduction<br />
03:32 – Universe as a computer<br />
05:48 – Occam’s razor<br />
09:26 – Solomonoff induction<br />
15:05 – Kolmogorov complexity<br />
20:06 – Cellular automata<br />
26:03 – What is intelligence?<br />
35:26 – AIXI – Universal Artificial Intelligence<br />
1:05:24 – Where do rewards come from?<br />
1:12:14 – Reward function for human existence<br />
1:13:32 – Bounded rationality<br />
1:16:07 – Approximation in AIXI<br />
1:18:01 – Godel machines<br />
1:21:51 – Consciousness<br />
1:27:15 – AGI community<br />
1:32:36 – Book recommendations<br />
1:36:07 – Two moments to relive (past and future)</p>