hub connector(11 oct2010)
DESCRIPTION
TRANSCRIPT
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