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. >
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