Presentation 2019-04-26
[Invited Talk] On the Impact of Network Topology on Information Search, Delivery, and Diffusiojn
Ryo Nakamura, Ryota Sakaguchi, Kazuyuki Yamashita, Daiki Matsui, Hiroyuki Ohsaki,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) A network topology is the logical structure of a communication network consisting of a large number of nodes (e.g., hosts and switches/routers) and links connecting among those nodes. Every communication network (e.g., Ethernet-based networks, TCP/IP networks, wireless networks, DTN (Delay/Disruption-Tolerant Networking), and ICN (Information-Centric Networking)) has a different network topology, depending on the features and capabilities of nodes (e.g., the maximum number of ports/interfaces and the tolerance to a network loop) and links (e.g., unidirectional/bidirectional, wired/wireless, and the maximum length) as well as several physical restrictions and usage patterns. Since a network topology is a sort of graphs, in the literature, it has been actively studied from theoretical and mathematical viewpoints in the field of graph theory and recently in the field of network science. In a communication network, not only the characteristics of the network topology itself (e.g., size, density, degree distribution, diameter, and connectivity), but the characteristics of communications performed on it (e.g., speed, quality, efficiency, availability, and reliability) are also important. This paper introduces four research topics recently published by our research group, each of which reveals the impact of the network topology on the characteristics of a dynamical process such as information search, delivery, and diffusion in a different context.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Network Topology / Complex Networks / Dynamic Process / Random Walk / Message Delivery Delay / Robustness / Mathematical Analysis
Paper # PN2019-4
Date of Issue 2019-04-19 (PN)

Conference Information
Committee PN
Conference Date 2019/4/26(1days)
Place (in Japanese) (See Japanese page)
Place (in English) The University of Electro-Communication, Build E-3, Hall 301
Topics (in Japanese) (See Japanese page)
Topics (in English) Signal Processing, Optical Devices, Optical Systems, Optical Networks, etc.
Chair Hiroshi Hasegawa(Nagoya Univ.)
Vice Chair Haruki Ogoshi(Furukawa Electric) / Takehiro Tsuritani(KDDI Research) / Hideaki Furukawa(NICT)
Secretary Haruki Ogoshi(NICT) / Takehiro Tsuritani(Univ. of Fukui) / Hideaki Furukawa(NTT)
Assistant Keijiro Suzuki(AIST)

Paper Information
Registration To Technical Committee on Photonic Network
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) [Invited Talk] On the Impact of Network Topology on Information Search, Delivery, and Diffusiojn
Sub Title (in English)
Keyword(1) Network Topology
Keyword(2) Complex Networks
Keyword(3) Dynamic Process
Keyword(4) Random Walk
Keyword(5) Message Delivery Delay
Keyword(6) Robustness
Keyword(7) Mathematical Analysis
1st Author's Name Ryo Nakamura
1st Author's Affiliation Kwansei Gakuin University(Kwansei Gakuin Univ.)
2nd Author's Name Ryota Sakaguchi
2nd Author's Affiliation Kwansei Gakuin University(Kwansei Gakuin Univ.)
3rd Author's Name Kazuyuki Yamashita
3rd Author's Affiliation Kwansei Gakuin University(Kwansei Gakuin Univ.)
4th Author's Name Daiki Matsui
4th Author's Affiliation Kwansei Gakuin University(Kwansei Gakuin Univ.)
5th Author's Name Hiroyuki Ohsaki
5th Author's Affiliation Kwansei Gakuin University(Kwansei Gakuin Univ.)
Date 2019-04-26
Paper # PN2019-4
Volume (vol) vol.119
Number (no) PN-16
Page pp.pp.17-24(PN),
#Pages 8
Date of Issue 2019-04-19 (PN)