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fchollet's profile
François Chollet
François Chollet
François Chollet
Verified account
@fchollet

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François CholletVerified account

@fchollet

Deep learning @google. Creator of Keras. Author of 'Deep Learning with Python'. Opinions are my own.

United States
fchollet.com
Joined August 2009

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    1. François Chollet‏Verified account @fchollet 1 Jul 2018

      Central planning is unbeatable as a resource allocation mechanism for small systems. As you attempt to scale it up, it becomes terribly ineffective, to such an extent that decentralized control algorithms wastly outperform it, despite being inherently wasteful

      13 replies 97 retweets 357 likes
      Show this thread
    2. François Chollet‏Verified account @fchollet 1 Jul 2018

      You don't need to look at country-scale economies to observe this effect (obviously free markets >> central planning), it applies even to large companies. Past a certain scale you need teams that compete against each other with overlapping products. But why?

      5 replies 9 retweets 75 likes
      Show this thread
    3. François Chollet‏Verified account @fchollet 1 Jul 2018

      I think it's a technology problem, not an intrinsic issue. Better cybernetics will enable us to scale efficient central control (while taking into account uncertainty and exploration) to increasingly large systems in the future

      9 replies 9 retweets 47 likes
      Show this thread
    4. Halvar Flake‏ @halvarflake 1 Jul 2018
      Replying to @fchollet

      So ... as a person with leftist convictions that started a successful company, I have opinions on this. The experience of markets as decentralized resource allocation has deeply influenced my thinking. Thread:

      2 replies 0 retweets 1 like
    5. Halvar Flake‏ @halvarflake 1 Jul 2018
      Replying to @halvarflake @fchollet

      The experience of being 23 years old, having no business experience, but building something people wanted, was extremely influential. It would have been near-impossible for me to convince "established" forces to allocate resources to what I was doing.

      1 reply 0 retweets 1 like
    6. Halvar Flake‏ @halvarflake 1 Jul 2018
      Replying to @halvarflake @fchollet

      But once I had built something people liked, a virtuous circle kicked in: I could sell it, and be allocated more resources in a decentralized manner, so I could build more of it.

      1 reply 0 retweets 1 like
    7. Halvar Flake‏ @halvarflake 1 Jul 2018
      Replying to @halvarflake @fchollet

      I am often a fierce critic of the failures, excesses, and mis-allocations in our current capitalist system. But the one redeeming property is decentralized resource allocation *not* influenced by historical patterns. Markets are infirmation-processors and resource allocators, ...

      1 reply 0 retweets 1 like
    8. Halvar Flake‏ @halvarflake 1 Jul 2018
      Replying to @halvarflake @fchollet

      ... and their ability to sense & adapt locally & independently (when they function well) has historically outperformed non-decentralized approaches. The USSR ploughed a lot of resources into better centralized planning, also hoping for "cybernetics" to scale things up.

      1 reply 0 retweets 1 like
    9. Halvar Flake‏ @halvarflake 1 Jul 2018
      Replying to @halvarflake @fchollet

      So color me sceptical on technology allowing us to scale centralized control.

      1 reply 0 retweets 1 like
      François Chollet‏Verified account @fchollet 1 Jul 2018
      Replying to @halvarflake

      You're describing the problem of exploration, which can definitely be solved in a centrally-planned way (at least for small systems)

      3:02 AM - 1 Jul 2018
      • 2 Likes
      • fight Abrahamic imperialism, LGBT+phobia, fascism
      1 reply 0 retweets 2 likes
        1. New conversation
        2. Halvar Flake‏ @halvarflake 1 Jul 2018
          Replying to @fchollet

          So what is the state of the art in optimal control in very large-scale systems and imperfect information, with nonconvex cost surfaces? ;). I guess my intuition is that coordination & control is never "free", and ...

          1 reply 0 retweets 1 like
        3. Halvar Flake‏ @halvarflake 1 Jul 2018
          Replying to @halvarflake @fchollet

          ... that decentralized locally-optimizing decisionmaking will be superior for most positive values of communication overhead. But that is intuition, not truth, so I may be wrong.

          1 reply 0 retweets 1 like
        4. Show replies

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