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2002 Fiscal Year Final Research Report Summary

Research on Dynamics of Learning and De-velopments by Combining Models of Morphology and Information dynamics

Research Project

Project/Area Number 13831003
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research InstitutionThe University of Tokyo

Principal Investigator

IKEGAMI Takashi  The University of Tokyo, Graduate School of Arts and Sciences, Associate Rofessor, 大学院・総合文化研究科, 助教授 (10211715)

Project Period (FY) 2001 – 2002
KeywordsEvolution / Cognition / Chaos / self-reproduction / ecological systems / dynamical systems
Research Abstract

1. Theory for Cognitive Behaviors : A difference between mere physical entrainment and cognitive synchrony can be found in e. g. sensitivity to the 'on-goingness' of interaction and/or diverse patterns of interaction in between mother-infant relationships (C. Trevarthen's experiments) . It is interesting to note that such properties are quite relevant to pre-linguistic interaction. We studied such properties in detail in the model of turn taking behaviors (ref. 1, 29) with coupled dynamical recognizers.
Our theoretical standing points are discussed in ref. 12 and 17 in the form of reviewing article of O. Rossler's endophysics and the commentary letter to I. Tsuda's paper, respectively.
We further discussed empirical cognitive data in ref. 19 and 20 with our newly developed ideas on joint attention and prediction.
2. Morphology Organization : We studied an evolution from primordial chemical soup to self-reproduction unit (cell) on 1 and 2-dimensional space (ref. 6, 15). Here we extended it … More to 3-dimensional (ref. 5). In these models, autocatalytic reactions generate chemical membranes that enclose the chemical reactions themselves, maintaining the membrane formations. The 3-dimensional space allows a variety of membrane forms. We are now planning to study how chemical reactions are selected through the morphology of the membrane. We also studied a cell-automata model of self-replication (ref. 4). There interaction among replicators generate new replicators to emerge. Such evolution by interaction is our another project with respect to self-reproduction.
3. Evolutionary EcoSystems : We have obtained some generic notions of evolution and heritability by studying artificial ecosystems. In particular, keystone species, that gives a larger impact on the whole system relative to its abundance when being removed, is rephrased in terms of dynamical systems. For example, an origin of compositional information construction is revealed (ref. 10). Mathematical structures of the models are studied in ref. 14 and 16. An ecosystem with a food-web structure is also studied in ref.8.
4. Etc : We have also studied I) dynamical systems interpretation of computational complexity (ref. 11), ii) game system (ref. 13) and iii) evolution of complexity in birds' songs (ref. 3).
Those results are the challenges to the open questions of artificial life studies posed in ref. 18. Less

  • Research Products

    (40 results)

All Other

All Publications (40 results)

  • [Publications] T.Ikegami, H.Iizuka: "Joint attention and Dynamics repertoire in Coupled Dynamical Recognizers"in the proceedings of the AISM 03 Second International Symposium on Imitation in Animals and Artifacts. Apr.. 125-130 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Iizuka, T.Ikegami: "Adaptive Coupling and Intersubjectivity in Simulated Turn-Taking Behaviours"to appear in the proceedings of ECAL03. Jena. (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Sasahara, T.Ikegami: "Coevolution of Birdsong Grammar without Imitation"to appear in the proceedings of ECAL03. Jena. (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Suzuki, T.Ikegami: "Interaction based Evolution of Self-replicating Loop Structures"to appear in the proceedings of ECAL03. Jena. (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] D.Madina, N.Ono, T.Ikegami: "Cellular Evolution in a 3D Lattice Artificial Chemistry"to appear in the proceedings of ECAL03. Jena. (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] N.Ono, T.Ikegami: "Selection of Catalysts through Cellular Reproduction"Artifical Life VIII. (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Ikegami, T.Iwata, K.Hashimoto: "A Network of Dynamic Keystone Species"Artifical Life VIII. (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Ito, T.Ikegami: "Evolutionary Dynamics of a Food Web with Recursive Branching and Extinction"Artificial Life VIII. (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Iizuka, T.Ikegami: "Simulating Turn-taking Behaviors with Coupled Dynamical Recognizers"Artificial Life VIII. (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Ikegami, K.Hashimoto: "Dynamical Systems Approach to Higher-level Heritability"J. Biol. Phys.. 28. 799-804 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] E.Nameda, T.Ohira, T.Ikegami: "Dynamical Systems approach to the Busy Beaver Problem"Computer Phys. Comm.. 147. 637-640 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] I.Tsuda, T.Ikegami: Vol.7. 213-214 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] G.Masumoto, T.Ikegami: "The Game System : An approach to a meta game"Advances in Artificial Life LINAI 2159. 695-699

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Hashimoto, T.Ikegami: "Emergence of a New Attracting Set by a Mixed Strategy in Game Dynamics"J. Phys. Soc. Japan. 11. 3221-3224 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] N.Ono, T.Ikegami: "Artificial Chemistry : Computational Studies on the Emergence of Self-Reproducing Units"Advances in Artificial Life LINAI 2159. 186-195

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Hashimoto, T.Ikegami: "Heteroclinic Chaos, Chaotic Itinerancy and Neutral Attractors in Symmetrical Replicator Equations with Mutations"J. Phys. Soc. Japan. 70. 349-352 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Ikegami, J.Tani: "Chaotic itinerancy needs embodied cognition to explain memory dynamics"Behavioral and Brain Sciences. 24:5. 818-819 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Bedau, Mark A., John S.McCaskill, Norman H.Packard, Steen Rasmussen, Chris Adami, David G.Green, Takashi Ikegami, Steen Rasmussen, Chris Adami, David G.Green, Takashi Ikegami, Kunihiko Kaneko, Thomas S.Ray: "Open Problems in Artificial Life"Artificial Life. 6(4). 363-376 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 宇野良子, 池上高志: "ジョイントアテンション/予測と言語:志向性をそろえるメカニズム"認知言語学論考. No.2. 231-274 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 宇野良子, 池上高志: "認知の2つの側面の切り離し難さ"ベビーサイエンスNo.1. 18-19 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T. Ikegami and H. Iizuka: "Joint attention and Dynamics repertoire in Coupled Dynamical Recog nizers"in the proceedings of the AISM 03 Second International Symposium on Imitation I n Animals and Artifacts. 125-130 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H, Iizuka and T. Ikegami: "Adaptive Coupling and Intersubjectivity"in Simulated Turn-Taking be haviours. (to appear in the proceedings of ECAL03, Jena).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Sasahara and T. Ikegami: "Coevolution of Birdsong Grammar without Imitation"(to appeear in the proceedings of ECAL03, Jena.).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Suzuki and T. Ikegami: "Interaction based Evolution of Self-replicating Loop Structures"(to appear in the proceedings of ECAL03, Jena).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] D. Madina, N. Ono and T. Ikegami: "Cellular Evolution in a 3D Lattice Artificial Chemistry"(to appear in the proceedings of ECAL03, Jena).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T. Ikegami and K. Hashimoto: "Dynamical Systems Approach to Higher-level Heritability"J. Biol. Phys. 28. 799-804 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] E. Nameda, T. Ohira and T. Ikegami: "Dynamical Systems approach to the Busy Beaver Problem"Computer Phys. Comm. 147. 637-640 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] I. Tsuda and T. Ikegami: "A book review on Endophysics"The World As An Interface Discrete Dynamics in Nature and Society. 7. 213-214 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Hashimoto and T. Ikegami: "Emergence of a New Attracting Set by a Mixed Strategy in Game Dynamics"j. Phys. Soc. Japan.. 11. 3221-3224 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Hashimoto and T. Ikegami: "Heteroclinic Chaos, Chaotic Itinerancy and Neutral Attractors in Symmetrical Replicator Equations with Mutations"j. Phys. Soc. Japan.. 70. 349-352 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T. Ikegami and J. Tani: "Chaotic itinerancy needs embodied cognition to explain memory dynamics Behavioral and Brain Sciences"24 : 5. 818-819 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Bedau, Mark A., John S. McCaskill, Norman H. Packard, Steen Rasmussen, Chris Adami, David G. Green, Takashi Ikegami, Kimihiko Kaneko, and Thomas S. Ray.: "Open Problems in Artificial Life"Artificial Life. 6(4). 363-376 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] R.W. Uno and T. Ikegami: "Joint Attention/Prediction and Language : A Mechanism of Sharing the Intentionality"Studies in Cognitive Linguistics. 2. 231-274

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] R.W. Uno and T. Ikegami: "Inseparable Nature of Two facets in Cognition"Baby Science. 1. 18-19 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Ono and T. Ikegami , eds. by R.K. Standish, M.A. Bedau and H.A. Abbass: "Selection of Catalysts through Cellular Re production in Artificial Life VIII"MIT. (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T. Ikegami, T. Iwata and K. Hashimoto , eds. by R.K. Standish, M.A. Bedau and H.A. Abbass: "A Network of Dynamic Keystone Species in Artificial Life VIII"MIT. 216-222 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Ito and T. Ikegami , eds. by R.K. Standish, M.A. Bedau and H.A. Abbass): "Evolutionary Dynamics of a Food Web with Recursive Branching and Extinction in Artificial Life VIII"MIT. 207-215 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Iizuka and T. Ikegami , eds. by R.K. Standish, M.A. Bedau and H.A. Abbass: "Simulating Turn-taking Behaviors with Coupled Dynamical Recognizers in Artificial Life VIII"MIT. 319-328 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] G. Masumoto and T. Ikegami , eds. by J. Kelemen and P. Sosik: "The A Game System : An approach to a meta game in Advances in Artificial Life LINAI 2159"Springer. 695-699 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Ono and T. Ikegami , eds. by J. Kelemen and P. Sosik: "Artificial Chemistry. Computational Studies on the Emergence of Self-Reproducing Units in Advances in Artificial Life LINAI 2159"Springer. 186-195 (2001)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2004-04-14  

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