Presentation 2021-09-08
Analysis of Diverse Random Walks with Different Transition Probabilities and Different Moving Frequencies Using Spectral Graph Theory
Nanami Tsuji, Fumiya Toyoda, Yusuke Sakumoto, Hiroyuki Ohsaki,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) The first meeting time is defined by the time it takes for multiple mobile agents starting random walks from different nodes on a graph to first meet at the same node, and is closely related to the rendezvous problem, which is a essential graph problem in computer science. Hence, understanding the characteristics of the first meeting time is important to design an efficient rendezvous algorithm on a graph. In the previous work, we analyzed two mobile agents performing random walks, and clarified the characteristics in their first meeting time. However, the previous work assumed that each mobile agent performs a random walk under the same condition. In this paper, we conduct the analysis of two mobile agents performing diverse random walks, and derive the spectral formula for the expected value of the first meeting time. In the diverse random walks, a mobile agent can (a) follow the different transition probabilities, and (b) move with the different frequencies, than another mobile agent. Moreover, we conduct simulation experiments to clarify the validity of the derived spectral formula for the expected value of the first meeting time.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Spectral Graph Theory / Rendezvous Problem / Random Walk / First Meeting Time
Paper # IA2021-17
Date of Issue 2021-09-01 (IA)

Conference Information
Committee IA
Conference Date 2021/9/8(1days)
Place (in Japanese) (See Japanese page)
Place (in English) Online
Topics (in Japanese) (See Japanese page)
Topics (in English) Internet Operation and Management, etc.
Chair Tomoki Yoshihisa(Osaka Univ.)
Vice Chair Toru Kondo(Hiroshima Univ.) / Yuichiro Hei(KDDI Research) / Hiroshi Yamamoto(Ritsumeikan Univ.)
Secretary Toru Kondo(Osaka Univ.) / Yuichiro Hei(Kogakuin Univ.) / Hiroshi Yamamoto(NEC)
Assistant Daisuke Kotani(Kyoto Univ.) / Ryo Nakamurai(Fukuoka Univ.) / Daiki Nobayashi(Kyushu Inst. of Tech.)

Paper Information
Registration To Technical Committee on Internet Architecture
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Analysis of Diverse Random Walks with Different Transition Probabilities and Different Moving Frequencies Using Spectral Graph Theory
Sub Title (in English)
Keyword(1) Spectral Graph Theory
Keyword(2) Rendezvous Problem
Keyword(3) Random Walk
Keyword(4) First Meeting Time
1st Author's Name Nanami Tsuji
1st Author's Affiliation Kwansei Gakuin University(Kwansei Gakuin Univ.)
2nd Author's Name Fumiya Toyoda
2nd Author's Affiliation Kwansei Gakuin University(Kwansei Gakuin Univ.)
3rd Author's Name Yusuke Sakumoto
3rd Author's Affiliation Kwansei Gakuin University(Kwansei Gakuin Univ.)
4th Author's Name Hiroyuki Ohsaki
4th Author's Affiliation Kwansei Gakuin University(Kwansei Gakuin Univ.)
Date 2021-09-08
Paper # IA2021-17
Volume (vol) vol.121
Number (no) IA-167
Page pp.pp.14-21(IA),
#Pages 8
Date of Issue 2021-09-01 (IA)