BFRS SAYS> Jeff Hawkins or Itamar would argue that the ability to deal with episodic memories effectively will just emerge from their hierarchies, if their systems are given enough perceptual experience. It’s hard to definitively prove this is wrong, because these models are all complex dynamical systems and we don’t know how to predict their behavior exactly.
SERGIO REPLIES> This may be a long shot because I come from a different approach and I am not directly interested in how the brain works or in episodic memories, but from my view I would agree that the ability to deal with them should emerge from their hierarchies. Also, I noticed that Jeff Hawkins in On Intelligence writes about "invariant representations," which are hierarchies, but never explains how they come into existence. I am just a little confused. Sergio From: bfrs [mailto:[email protected]] Sent: Thursday, July 19, 2012 10:30 PM To: AGI Cc: [email protected]; [email protected] Subject: [agi] Re: How the Brain Works -- new H+ magazine article, by me Your CogBot proposal hinted at this, but this is news for me: ... my own interest in DeSTIN, is largely because I can connect it to the OpenCog AGI architecture I’m working on — and in my own view, OpenCog takes care of a lot of other aspects of intelligence, that DeSTIN in its current form doesn’t touch. Itamar, on the other hand, thinks he can basically take DeSTIN, implement it on a lot of machines, tweak the algorithms a little, connect it to a robot, and get advanced general intelligence. He has plans for an action hierarchy similar to the perception hierarchy, and then a reward hierarchy that gets a stimulus when the system has done something good or bad and passes this along to the action hierarchy, which then passes it along to the perception hierarchy. I agree that adding some stuff onto DeSTIN would be necessary to make it do anything like human-level intelligence. But I think you’d need to do a lot more than just add action and reinforcement hierarchies. I think the human brain is just a lot more complex than that, and any AGI system that’s vaguely like the human brain is going to have to be a lot more complex than that. There will have to be many different architectures corresponding to many different brain regions, each one carrying out its own functions and all connecting together appropriately. To take just one example almost at random, the human brain is known to deal with episodic memory — memory of your life-story and the events in it — quite differently from memory of images or facts or actions. But nothing in architectures like HTM or DeSTIN tells you anything about how episodic memory works. Jeff Hawkins or Itamar would argue that the ability to deal with episodic memories effectively will just emerge from their hierarchies, if their systems are given enough perceptual experience. It’s hard to definitively prove this is wrong, because these models are all complex dynamical systems and we don’t know how to predict their behavior exactly. But yet, it really seems the brain doesn’t work this way — episodic memory has its own architecture, different in specifics from the architecture of visual or auditory perception. I suspect that if one wanted to build a closely brain-like AGI system, one would need to design fairly specialized circuits for episodic memory, plus dozens to hundreds of other specialized subsystems. AGI | <https://www.listbox.com/member/archive/303/=now> Archives <https://www.listbox.com/member/archive/rss/303/18883996-f0d58d57> | <https://www.listbox.com/member/?&;> Modify Your Subscription <http://www.listbox.com> ------------------------------------------- AGI Archives: https://www.listbox.com/member/archive/303/=now RSS Feed: https://www.listbox.com/member/archive/rss/303/21088071-c97d2393 Modify Your Subscription: https://www.listbox.com/member/?member_id=21088071&id_secret=21088071-2484a968 Powered by Listbox: http://www.listbox.com
