Thread View: comp.theory.dynamic-sys
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Started by Harry Erwin
Thu, 24 Dec 1992 19:34
>>>Refs on chaos in neural activity ?
Author: Harry Erwin
Date: Thu, 24 Dec 1992 19:34
Date: Thu, 24 Dec 1992 19:34
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Our newsmaster (me) has been learning about batching the hard way. The following is being reposted: >References: <H.eg.UEnwI&3EHKA@wpcst1.phys-chemie.uni-wuerzburg.dbp.de> <1992Dec21.182154.4670@magnus.acs.ohio-state.edu> <1992Dec23.110835.77@rcwusr> >Date: Wed, 23 Dec 1992 20:23:15 GMT lakerb@rcwusr.bp.com writes: ><OPINION MODE ON> >It seems that the chaos-focussed researchers can't see the forest for the >trees. The "chaos" that is enamoured for its inherent "beauty" may, in fact, >be conveying a set of signals bearing important information for the control of >some neural process. Decoding the "chaos" that bears the message is likely to >be less than fruitful ... the key is the range of the variation in the >information borne by the "chaos". ><OPINION MODE OFF> >Robin Lake >BP Research >lake@rcwcl1.dnet.bp.com The chaos seen in Freeman's work appears to be associated with an accessible hyperbolic critical point that is used as a starting point for rapid pattern recognition. Another potential application of chaos is in controlling a significant, naturally dissipative process at minimum cost. A third application of chaos is in creating intelligent but unpredictable behavior. (A good fighter pilot is chaotic.) In yet another context, the "best" approach to non-zero-sum games with information collection is inherently chaotic (and hence difficult for purely stimulus/response systems to generate). Chaos can also be exploited for secure communication between members of a distributed community. Chaos also resists stylized attacks better than any periodic process (since the response time distribution has a continuous Fourier spectrum). Cheers, -- Harry Erwin Internet: erwin@trwacs.fp.trw.com
Re: >>>Refs on chaos in neural activity ?
Author: lakerb
Date: Sat, 26 Dec 1992 02:01
Date: Sat, 26 Dec 1992 02:01
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In article <erwin.725225662@trwacs>, erwin@trwacs.fp.trw.com (Harry Erwin) writes: > Our newsmaster (me) has been learning about batching the hard way. The > following is being reposted: > >>References: <H.eg.UEnwI&3EHKA@wpcst1.phys-chemie.uni-wuerzburg.dbp.de> <1992Dec21.182154.4670@magnus.acs.ohio-state.edu> <1992Dec23.110835.77@rcwusr> >>Date: Wed, 23 Dec 1992 20:23:15 GMT > > lakerb@rcwusr.bp.com writes: > >><OPINION MODE ON> >>It seems that the chaos-focussed researchers can't see the forest for the >>trees. The "chaos" that is enamoured for its inherent "beauty" may, in fact, >>be conveying a set of signals bearing important information for the control of >>some neural process. Decoding the "chaos" that bears the message is likely to >>be less than fruitful ... the key is the range of the variation in the >>information borne by the "chaos". >><OPINION MODE OFF> > >>Robin Lake >>BP Research >>lake@rcwcl1.dnet.bp.com > > The chaos seen in Freeman's work appears to be associated with an > accessible hyperbolic critical point that is used as a starting point for > rapid pattern recognition. At a critical point, any of a number of successive paths (trajectories, strategies) are equally feasible. In that "information" is the selection from a set of alternatives, does the pursuit of a successive path where any path is equally possible convey any information? If you are saying that Freeman hypothesizes a hyperbolic critical point and assumes that the system sensitivity at that point effects a pattern recognition, I'd be quite hesitant to accept a no-information-value-added path as conveying any information about the pattern presented. It may be that the representation of the underlying system is less than complete, neglecting to include the input representing the pattern(s). I'll think about this for a while. > Another potential application of chaos is in > controlling a significant, naturally dissipative process at minimum cost. > A third application of chaos is in creating intelligent but unpredictable > behavior. (A good fighter pilot is chaotic.) In yet another context, the > "best" approach to non-zero-sum games with information collection is > inherently chaotic (and hence difficult for purely stimulus/response > systems to generate). Chaos can also be exploited for secure communication > between members of a distributed community. Chaos also resists stylized > attacks better than any periodic process (since the response time > distribution has a continuous Fourier spectrum). > I'm willing to buy into the concept that a fractal dimension (or better yet, a CHANGE in a fractal dimension) can convey information. That this represents "intelligence" requires a leap of faith. Rob Lake BP Research lake@rcwcl1.dnet.bp.com
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