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Can a New Theory of the Neocortex Lead to Truly Intelligent Machines?
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Can a New Theory of the Neocortex Lead to Truly Intelligent Machines?
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Talk about intelligent designs: Jeff Hawkins says he’s mapped out the way the human brain works, and has begun to fashion thinking machines to emulate the process. It comes down to Hierarchical Temporal Memory (HTM). Basically, he says, our brains take sensory inputs from the world and build a set of beliefs around the causes of those inputs. “Discovering causes is the pinnacle of what brains do,” says Hawkins. But getting good at this kind of “fancy pattern recognition” is something developing humans seem to do effortlessly, and computers only with immense labor. Learning to differentiate a cat and a dog, for instance, doesn’t come naturally to a computer. Hawkins layers his machine brains with nodes that make inferences about outside sensory data, and then pass these hunches on up a hierarchy of nodes until a consensus -- a belief -- evolves about the source of the data. The use of “belief propagation techniques”, says Hawkins, enables an entire system to reach the best overall consensus swiftly. As the thinking machine develops common representations of objects or ideas, it can generalize about new data coming at it, and learn to attend only to information that matters.
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Technology
The Digital Age
Social Sciences
Psychology
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