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GaryMarcus's profile
Gary Marcus
Gary Marcus
Gary Marcus
@GaryMarcus

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Gary Marcus

@GaryMarcus

CEO/Founder of http://Robust.AI ; cognitive scientist, and best-selling author. New book: http://Rebooting.AI : Building Artificial Intelligence We Can Trust

garymarcus.com
Joined December 2010

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    1. Gary Marcus‏ @GaryMarcus Nov 6
      • Report Tweet

      Sutskever to @NewYorker: "If you train a system which predicts the next word well enough, then it ought to understand" ML fans when I show GPT-2 has no idea what happens as events unfold over time: GPT-2 is just system for predicting next words; not fair to ask it to understand.

      13 replies 11 retweets 88 likes
      Show this thread
    2. Jerome Pesenti‏ @an_open_mind Nov 7
      • Report Tweet
      Replying to @GaryMarcus @NewYorker

      It’s not all or nothing. There are just degrees of understanding. These large language models do have some surprising level of understanding: they can figure out entity types or do phrase translations. But they also lack common sense and make silly coherence mistakes.

      1 reply 0 retweets 2 likes
    3. Jerome Pesenti‏ @an_open_mind Nov 7
      • Report Tweet
      Replying to @an_open_mind @GaryMarcus @NewYorker

      Which makes the concept of “understanding” not very interesting and overused. Better to refer back to tasks and benchmarks and not extrapolate from that as @tdietterich suggested in his recent medium piece.

      3 replies 0 retweets 2 likes
      Gary Marcus‏ @GaryMarcus Nov 7
      • Report Tweet
      Replying to @an_open_mind @NewYorker @tdietterich

      it is worse than just “they make silly coherence mistakes” when i forget to carry a 1 in a math problem, that is a silly mistake. i have the overall framework & goof. these models don’t. all they do is dredge statistics; the reading models NEVER build real models of the world.

      6:23 AM - 7 Nov 2019
      • 6 Likes
      • Abhinav Arya William Zander Danilo J. Rezende Jprwg Chomba Bupe Alok Damle
      1 reply 0 retweets 6 likes
        1. New conversation
        2. Thomas G. Dietterich‏ @tdietterich Nov 7
          • Report Tweet
          Replying to @GaryMarcus @an_open_mind @NewYorker

          Dredging statistics would be fine if they were the right statistics. But GPT-2 &co are not capturing statistics about agents, goals, intentions, actions, etc. So unsurprisingly, they don't learn about them

          1 reply 0 retweets 5 likes
        3. Jerome Pesenti‏ @an_open_mind Nov 7
          • Report Tweet
          Replying to @tdietterich @GaryMarcus @NewYorker

          I agree that "silly mistakes" understates it. It has no clue about many things that are obvious for humans. But it captures some meaningful statistics and some limited model of the world (e.g., Obama is a human). Again I would refrain from using "not real" as a criticism.

          0 replies 0 retweets 1 like
        4. End of conversation

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