hub connector(11 oct2010)

HUB AND CONNECTOR

CHAPTER.5

최명군

Erdős–Rényi Model

Erdős–Rényi Model

- 무작위적인 연결

- 모든 노드들은 같은 수의 링크를 갖게 될 것임

Erdős–Rényi Model

Watts-Strogatz model

Watts-Strogatz model

- 무작위적인 연결

- 사회적 시스템들 안에는 클러스터들이 존재함

- 장거리 링크들은 노드간의 평균거리를 단축시킴

Watts-Strogatz model

Barabási–Albert model

A.O. I. Hoffmann, W. Jager and J. H. Von Eije(2007), Social

Simulation of Stock Markets: Taking It to the Next Level,

Journal of Artificial Societies and Social Simulation vol. 10, no. 2, 7

Barabasi and Albert scale free network

- 척도 없는 네트워크 (scale-free network)

- 허브 (Hub) / 커넥터 (Connector)

Barabási–Albert model

Example…

Hub

Connector

hub

connector

Hub/Connec-

tor1. People in a community who know large

numbers of people and who are in the habit of making introductions.

2. The social equivalent of a computer network hub.

1. 한 커뮤니티에서 많은 사람들을 알고 소개 인 ( 人 )

으로써의 역할을 담당하는 사람 .

2. 컴퓨터 네트워크의 ‘허브’에 상당하는 의미를

지닌 사회적 어휘

Hub/Connec-

tor

- 비정상적으로 많은 링크를 갖고 있는 노드들

Hub/Connec-

tor

World Airline Routes

http://www.flickr.com/photos/97373666@N00/3264396897/

- Data from:Google Maps(http://maps.google.com/)Airlineroutemaps(http://www.airlineroutemaps.com/index.html)

1. 경향과 유행을 만듦

2. 중요한 거래를 성사시킴

3. 유행을 전파

4. 식당 개업하는 것을 도와줌

Hub/Connector(social)

Hub = Connec-

tor?

NO!

Hub ≒ Connec-

tor

Hub ≠ Connec-

tor

SNA

Hub ≠ Connec-

tor- Hubs/Connectors are nodes with high degree

and betweeness centrality.

- Orgnet.comhttp://www.orgnet.com/sna.html

SNA.

1

Social network

1 Mode Matrix

Symmetric Matrix

Binary Matrix

Non-directional Ma-

trix

Hub

Connec-

tor

SNA.

2

Ecosystem network

1 Mode Matrix

Asymmetric Matrix

Binary Matrix

Directional Matrix

Hub/

Connec-

tor

Hub/

Connec-

tor

HUB AND CONNECTOR

CHAPTER.5

Q&A

THANK YOU

CHAPTER.5