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IBM demos cognitive computer chips

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8/18/2011 04:01 AM EDT
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pixies
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re: IBM demos cognitive computer chips
pixies   8/18/2011 8:55:44 PM
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$20M for Phase 0 and Phase I combined, not bad. I wonder what's the goal for Phase II. It will be exciting to see a machine with 10B neurons built and find out what it can do.

Code Monkey
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re: IBM demos cognitive computer chips
Code Monkey   8/18/2011 8:58:41 PM
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To the lab guys: If you drop the chip and it breaks, don't substitute the one marked "Abnormal - Do Not Use".

DataBass
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re: IBM demos cognitive computer chips
DataBass   8/18/2011 9:07:14 PM
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Will the device be made out of a platinum/iridium alloy?

BrainiacV
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re: IBM demos cognitive computer chips
BrainiacV   8/18/2011 9:15:16 PM
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I dunno, it's hard to tell what you've taught a neural circuit. It's easy teaching it the difference between a bruised and unbruised apple. I once heard the story of how they tried to teach a neural program to detect tanks on a field. They showed it fields with and without. When it came for a field trial it failed spectacularly. Going back over the input data, the best guess is that they had taught it how to tell a sunny day from a cloudy day, which turned out to be the difference when the tanks were on the field or not.

R G.Neale
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re: IBM demos cognitive computer chips
R G.Neale   8/18/2011 9:39:37 PM
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Mr Rbtrob- There were two parts to the Stanford synapse experiment. The first was to demonstrate 100 level resolution. The second to demonstrate that the synapse characteristics could be reproduced, for this they used 15 pulse trains. I reduced it to fewer for the purpose of my explanation and illustration. I think the use of epitaxial regrowth of the same crystals, as illustrated in one of my figures is the way to obtain reproducibility and 100 level resolution. However, that path tend to lead to the conclusion that PCRAM might offer a superior solution.

old account Frank Eory
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re: IBM demos cognitive computer chips
old account Frank Eory   8/18/2011 9:44:36 PM
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A pure digital chip that is supposed to emulate neurons, synapses and dendrites? As mdkosloski said, they might as well just do the whole thing in software. Oh wait, they did. So I guess the point of building the chip was just so they could eventually build a 10B neuron/100T synapse machine the size of a shoe box? They could simulate that in software too...it just takes more computers to do it.

markhahn0
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re: IBM demos cognitive computer chips
markhahn0   8/18/2011 11:39:22 PM
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I'm disappointed eetimes doesn't have something more technical about the architecture here. are the weights stored in registers? the device is said to be all digital, so doesn't an update cycle require a lot of flops? isn't a fan-out of 10,000 pretty hard to drive? why is 10Hz an adequate update rate (it certainly doesn't match real neurons.) if this thing is structured like an xbar, does that mean there's some kind of multiplier at each crossing? (the weights and summation are digital, right?)

resistion
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re: IBM demos cognitive computer chips
resistion   8/19/2011 6:21:59 AM
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I think I missed something, such as how the neurons are implemented. Phase change? Charge accumulation?

entity279
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re: IBM demos cognitive computer chips
entity279   8/19/2011 7:19:19 AM
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Implementation aside, why is this any better than any regular (software, hardware or.. FPGA) ANN?

resistion
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re: IBM demos cognitive computer chips
resistion   8/19/2011 1:21:38 PM
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Ok it's just SRAM and CPU, specifically wired, apparently. http://www.scientificamerican.com/article.cfm?id=inside-ibms-cognitive-chip

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