Hey, Doug, thanks for digging up the IBM papers! Eye opening. IBM's approach to their model, silicon, and programming environment seems quite rigorous and advanced. I don't claim exhaustive knowledge of the field, but a lot of the prior work I've seen struck me as people randomly wiring spiking neurons and merely seeking signs of biologically plausible synchronous firing patterns, not seriously trying to construct a usable, programmable neuromorphic computing paradigm. Impressive.
Interesting to contemplate, as you suggest, how the predictive framework of the CLA might be expressed in "corelets"... -Steve O. On Aug 8, 2013, at 5:39 PM, Doug King <[email protected]> wrote: > Hi Steve, > > The last link is most interesting. I have been following the DARPA SyNAPSE > program output for a while but these new announcements are exciting news. > > IBM has created silicon that uses 1272 ASIC gates to create a model of a > leaky integrate-and-fire (LIF) neuron. The current chip has 256-neuron, > 64k/256k-synapse neurosynaptic cores in 45nm silicon. The leaky model with a > constant leak is described by five basic operations: 1. synaptic integration, > 2. leak integration, 3. threshold, > 4. spike firing, and 5. reset. With that model a programmer can create higher > level constructs. It looks flexible enough that I could imagine using > something like this as an accelerator to the CLA. It's clear to me that the > CLA we are working with now in VonNumann software will be soon run on > neuromorphic co-processor hardware. This is something to keep in mind as we > build out the CLA and HTM codebase - how will we accelerate in hardware and > how can we keep a migration path open for the models we invest in without > loosing that investment? > > Whitepapers here: > http://www.research.ibm.com/software/IBMResearch/multimedia/IJCNN2013.neuron-model.pdf > http://www.research.ibm.com/software/IBMResearch/multimedia/IJCNN2013.corelet-language.pdf > http://www.research.ibm.com/software/IBMResearch/multimedia/IJCNN2013.algorithms-applications.pdf > > > On Thu, Aug 8, 2013 at 12:15 AM, Steven Oberlin <[email protected]> wrote: >> You guys see these? >> >> 1) Video: Sleep as a way to restore/maintain neural plasticity; a lesson >> here about the potential value of adjusting pegged permanence values back >> toward threshold from time to time? >> >> http://www.scientificamerican.com/article.cfm?id=sleep-brains-way-staying-balance-video-giulio-tononi >> >> 2) Video: Researchers publish papers in Nature on "connectome" of portions >> of rat and fruit fly retinas and another describing decoding motion >> detection specialization of fruit fly neurons. Jeff has blogged about >> sparse lessons to be learned from merely mapping connections. Makes for >> pretty pictures, but perhaps better illustrates daunting complexity arising >> from a paucity of theory. The motion detection paper seems to offer more, >> but I don't have a Nature subscription. >> >> http://www.nature.com/news/visual-neurons-mapped-in-action-1.13520 >> >> 3) Video: IBM researchers brainstormed applications of low-power, >> high-density neuromorphic silicon, funded by DARPA SyNAPSE program. (I >> found myself trying to read the displays in the background that the >> presenter *wasn't* describing…) >> >> http://www.engadget.com/2013/08/08/ibm-research-reveals-new-silicon-chip-foundation >> >> -Steve O. >> _______________________________________________ >> nupic mailing list >> [email protected] >> http://lists.numenta.org/mailman/listinfo/nupic_lists.numenta.org > > _______________________________________________ > nupic mailing list > [email protected] > http://lists.numenta.org/mailman/listinfo/nupic_lists.numenta.org
_______________________________________________ nupic mailing list [email protected] http://lists.numenta.org/mailman/listinfo/nupic_lists.numenta.org
