Starting in 2000, Hutter developed and published a mathematical theory of artificial general intelligence, AIXI, based on idealised intelligent agents and reward-motivated reinforcement learning.[6][7][4] His book Universal Artificial Intelligence: Sequential Decisions Based on Algorithmic Probability was published in 2005 by Springer.[8] Also in 2005, Hutter published with his doctoral student Shane Legg an intelligence test for artificial intelligence devices.[9] In 2009, Hutter developed and published the theory of feature reinforcement learning.[10] In 2014, Lattimore and Hutter published an asymptotically optimal extension of the AIXI agent.[11]
In 2019, Hutter joined DeepMind, recruited by Shane Legg.[2] In 2022, he co-authored a paper arguing that "deploying a sufficiently advanced reinforcement learning agent would likely be incompatible with the continued survival of humanity".[12][13]
Joel Veness, Kee Siong Ng, Marcus Hutter, William Uther and David Silver (2011). "A Monte-Carlo AIXI Approximation". Journal of Artificial Intelligence Research. 40. AAAI Press: 95–142. arXiv:0909.0801. doi:10.1613/jair.3125. S2CID206618.{{cite journal}}: CS1 maint: multiple names: authors list (link)