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Angaben zur Quelle [Bearbeiten]

Autor     Karen Stephenson, Marvin Zelen
Titel    Rethinking Centrality: Methods and Examples
Zeitschrift    Social Networks
Ausgabe    11
Jahr    1989
Seiten    1-37
URL    http://www.sciencedirect.com/science/article/pii/0378873389900166

Literaturverz.   

no
Fußnoten    no
Fragmente    3


Fragmente der Quelle:
[1.] Nm2/Fragment 435 34 - Diskussion
Zuletzt bearbeitet: 2014-01-11 22:18:10 WiseWoman
Fragment, Gesichtet, Nm2, SMWFragment, Schutzlevel sysop, Stephenson and Zelen 1989, Verschleierung

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Quelle: Stephenson and Zelen 1989
Seite(n): 2, 3, Zeilen: 2: 31ff; 3: 1ff
A review of key centrality concepts can be found in the papers by Freeman et al. [23]. Their work has significantly contributed to the conceptual clarification and theoretical application of centrality. He provides three general measures of centrality termed “degree”, “closeness”, and “betweenness”. His development was partially motivated by the structural properties of the center of a star graph. The most basic idea of degree centrality in a graph is the adjacency count of its constituent nodes.

23. Freeman, L.C., Freeman, S.C., Michaelson, A.G.: On Human Social Intelligence. Journal of Social and Biological Structures 11, 415–425 (1988)

A review of key centrality concepts can be found in the papers by Freeman (1979a,b). His work has significantly contributed to the conceptual clarification and theoretical application of centrality. Motivated by the work of Nieminen (1974), Sabidussi (1966), and Bavelas (1948) he provides three general measures of centrality termed

[page 3]

“degree”, “closeness”, and “betweenness”. His development is partially motivated by the structural properties of the center of a star graph. The most basic idea of point centrality in a graph is the adjacency count of its constituent points. “


Freeman, L.C. 1979 a “Centrality in Social Networks: Conceptual Clarification.” Social Networks I: 215-239.

Anmerkungen

The reference to Freeman et al. is to a different paper, a group work that does not deal with centrality concepts. Interestingly, referring to the authors the next sentence speaks of "Their", the one after that of "He", and then "His", which parallels the sentences in Stephenson & Zelen. The word "point" has been replaced by "node". Stephenson & Zelen 1989 are not mentioned anywhere in the paper.

Sichter
(Hindemith), WiseWoman

[2.] Nm2/Fragment 437 01 - Diskussion
Zuletzt bearbeitet: 2014-01-11 22:03:33 WiseWoman
Fragment, Gesichtet, Nm2, SMWFragment, Schutzlevel sysop, Stephenson and Zelen 1989, Verschleierung

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Seite: 437, Zeilen: 1-5
Quelle: Stephenson and Zelen 1989
Seite(n): 3, Zeilen: 10-16
The third measure is betweenness which is defined as the frequency at which a node occurs on geodesics that connect pairs of nodes. Thus, any node that falls on the shortest path between other nodes can potentially control the transmission of information or effect exchange by being an intermediary; it is the potential for control that defines the centrality of these nodes [23].

23. Freeman, L.C., Freeman, S.C., Michaelson, A.G.: On Human Social Intelligence. Journal of Social and Biological Structures 11, 415–425 (1988)

The third measure is called betweenness and is the frequency at which a point occurs on the geodesic that connects pairs of points. Thus, any point that falls on the shortest path between other points can potentially control the transmission of information or effect exchange by being an intermediary. “It is this potential for control that defines the centrality of these points” (Freeman 1979a: 221).

Freeman, L.C. 1979 a “Centrality in Social Networks: Conceptual Clarification.” Social Networks I: 215-239.

Anmerkungen

The authors replace "point" with "node" and remove the quotation marks of the Freeman quote, although a different Freeman paper is cited that does not actually discuss "betweenness" at all. Stephenson & Zelen (1989) are not mentioned.

Sichter
(Hindemith), WiseWoman

[3.] Nm2/Fragment 440 16 - Diskussion
Zuletzt bearbeitet: 2014-01-11 21:49:11 WiseWoman
Fragment, Gesichtet, KomplettPlagiat, Nm2, SMWFragment, Schutzlevel sysop, Stephenson and Zelen 1989

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Untersuchte Arbeit:
Seite: 440, Zeilen: 16-22
Quelle: Stephenson and Zelen 1989
Seite(n): 3, 27, Zeilen: 3: 28ff; 27: 34ff
We have attempted to illustrate the calculation of centralities to these prototypical situations. However we regard our efforts in this direction as only a beginning. We only considered shortest distances in this paper. It is quite possible that information will take a more circuitous route either by random communication or may be intentionally channeled through many intermediaries in order to “hide” or “shield” information in a way not captured by geodesic paths. These considerations raise questions as to how to include all possible paths in a centrality measure. It is quite possible that information will take a more circuitous route either by random communication or may be intentionally channeled through many intermediaries in order to “hide” or “shield” information in a way not captured by geodesic paths. These considerations raise questions as to how to include all possible paths in a centrality measure.

[page 27]

We have attempted to illustrate the calculation of centralities to these prototypical situations. However we regard our efforts in this direction as only a beginning.

Anmerkungen

The source is not mentioned anywhere in the paper.

Sichter
(Hindemith), WiseWoman

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