Presentation 2016-06-13
A mean field analysis of the simple model of evolving open system
Fumiko Ogushi, Takashi Shimada,
PDF Download Page PDF download Page Link
Abstract(in Japanese) (See Japanese page)
Abstract(in English) A simple model of evolving open systems with the mono-directional interaction gives a novel transition from the diverging phase to the finite phase. The system can grow in a range of 4 < m < 19, where m represents the interaction number of the new incoming elements, and it remains in a finite size in the case of m > 19. Assuming that the system is a random network, we evaluate the transition point on a basis of a mean field approach; The system is able to be described by the average values of degree and fitness of the entire system. From the mean field approach, we found that the extinction probability E(m) decreases when m increases and the decreasing speed is slower than the increasing speed of m. Thus, the expectation value of the extinction species mE(m) increases and crosses one at mc* =13. It corresponds to the transition point. Moreover, extinction probabilities which are directly observed in the systems of the mono-directional model are smaller than the estimation value from the mean field analysis. As a result of the smaller extinction probabilities, the transition point in the mono-directional model (mc =18) becomes larger than the mean field approach.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Evolving open system / Transition / Mean field analysis
Paper # NLP2016-23,CCS2016-6
Date of Issue 2016-06-06 (NLP, CCS)

Conference Information
Committee CCS / NLP
Conference Date 2016/6/13(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Kikai-Shinko-Kaikan Bldg.
Topics (in Japanese) (See Japanese page)
Topics (in English) Nonlinear Science, Complexity Science, etc.
Chair Yasuhiro Tsubo(Ritsumeikan Univ.) / Hisato Fujisaka(Hiroshima City Univ.)
Vice Chair Naoki Wakamiya(Osaka Univ.) / Mikio Hasegawa(Tokyo Univ. of Science) / Masaharu Adachi(Tokyo Denki Univ.)
Secretary Naoki Wakamiya(Kyoto Sangyo Univ.) / Mikio Hasegawa(Osaka Univ.) / Masaharu Adachi(Konan Univ.)
Assistant Takayuki Kimura(Nippon Inst. of Tech.) / Song-Ju Kim(NIMS) / Ryo Takahashi(Kyoto Univ.) / Hidehiro Nakano(Tokyo City Univ.) / Hiroyuki Asahara(Okayama Univ. of Science) / Toshihiro Tachibana(Shonan Inst. of Tech.)

Paper Information
Registration To Technical Committee on Complex Communication Sciences / Technical Committee on Nonlinear Problems
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A mean field analysis of the simple model of evolving open system
Sub Title (in English)
Keyword(1) Evolving open system
Keyword(2) Transition
Keyword(3) Mean field analysis
1st Author's Name Fumiko Ogushi
1st Author's Affiliation Tohoku University(Tohoku Univ.)
2nd Author's Name Takashi Shimada
2nd Author's Affiliation The University of Tokyo(Univ. of Tokyo)
Date 2016-06-13
Paper # NLP2016-23,CCS2016-6
Volume (vol) vol.116
Number (no) NLP-86,CCS-87
Page pp.pp.21-25(NLP), pp.21-25(CCS),
#Pages 5
Date of Issue 2016-06-06 (NLP, CCS)