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Volumn 14, Issue 3, 2004, Pages 699-706

Chaotic itinerancy in the oscillator neural network without Lyapunov functions

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EID: 7244234226     PISSN: 10541500     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1785612     Document Type: Article
Times cited : (15)

References (52)
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  • 25
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    • FOCUS ISSUE: Chaotic itinerancy
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  • 36
    • 84958272576 scopus 로고    scopus 로고
    • note
    • Note that these two couplings are the same when we consider storing p orthogonal random patterns (fully uncorrelated patterns) because A [Eq. (7)] reduces to a unit matrix at that time.
  • 37
    • 84958272577 scopus 로고    scopus 로고
    • note
    • 1|at the retrieval-nonretrieval transition point) is improved, and furthermore, (iii) the basin of attraction of the stored patterns get much deeper, while the extent of a basin becomes infinitesimal near the retrieval-nonretrieval transition boundary (Refs. 45-47).
  • 38
    • 84958272578 scopus 로고    scopus 로고
    • note
    • In contrast to the result of Ref. 27, we did not come across the numerical observation of the sinusoidally oscillating retrieval solutions with the oscillation amplitude greater than 0.01. The bifurcation theory tells us the existence of the sinusoidal solution parameterized between the fixed-point-type retrieval and the chaotic retrieval solutions. However, we stored a number of correlated patterns with the help of the pseudoinverse method. That must negatively work upon the appearance.
  • 39
    • 84958272579 scopus 로고    scopus 로고
    • note
    • z∼ 11.2∼0.2 as a rough estimation.
  • 40
    • 84958272580 scopus 로고    scopus 로고
    • note
    • 2 for CI, which is necessarily blurred by the finite size effect of N, is expected to be most easily done in the case of α≃0.02. If one chooses α slightly larger than 0.02, the corresponding bifurcation diagram would result in more blurred one.
  • 41
    • 84958272581 scopus 로고    scopus 로고
    • note
    • 2≤2.5. One run and 2000≤t≤5000 for the nonretrieval solutions. Here its ergodicity is realized in shorter time scale.
  • 42
    • 84958272582 scopus 로고    scopus 로고
    • note
    • 2 on the sth layer.)
  • 46
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    • note
    • N) as well as the (pre-destabilized) attractor does contain it. Thus, the basin size is always larger than the size of an attractor ruin.
  • 47
    • 84958272584 scopus 로고    scopus 로고
    • note
    • The appearance of the chaotic retrieval solutions has been numerically reported also in the study of the auto-associative oscillator neural networks accompanied with asymmetric distributions of native frequencies (Ref. 48). This system, which is described with coupled differential equations, seems to be mathematically tractable. So future studies on it will attract much attention.
  • 52
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    • note
    • See EPAPS Document No. E-CHAOEH-14-041403 for movies of the retrieval solutions and images of stored patterns. A direct link to this document may be found in the online article's HTML reference section. The document may also be reached via the EPAPS homepage (http://www.aip.org/pubservs/epaps.html) or from ftp.aip.org in the directory/epaps/. See the EPAPS homepage for more information.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.