Linton C. Freeman

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The intuitive background for measures of structural centrality in social networks is reviewed aPzd existing measures are evaluated in terms of their consistency with intuitions and their interpretability. Three distinct intuitive conceptions of centrality are uncovered and existing measures are refined to embody these conceptions. Three measures are(More)
The use of visual images is common in many branches of science. And reviewers often suggest that such images are important for progress in the various fields (Koestler, 1964; Arnheim, 1970; Taylor, 1971; Tukey, 1972; Klovdahl, 1981; Tufte, 1983; Beliën and Leenders). The historian Alfred Crosby (1997) has gone much further. He has proposed that(More)
A new measure of centrality, C,, is introduced. It is based on the concept of network flows. While conceptually similar to Freeman’s original measure, Ca, the new measure differs from the original in two important ways. First, C, is defined for both valued and non-valued graphs. This makes C, applicable to a wider variety of network datasets. Second, the(More)
To uncover patterns of those kinds, network analysts collect and examine data on actor-to-actor ties. Such data record who is connected to whom and/or how closely they are connected. Typically, the data are organized into square, N-dimensional, N-by-N matrices where the N rows and the N columns both refer to the social actors being studied. Cell entries in(More)
We describe and illustrate methodology for comparing networks from diverse settings. Our empirical base consists of 42 networks from four kinds of species (humans, non-human primates, non-primate mammals, and birds) and covering distinct types of relations such as influence, grooming, and agonistic encounters. The general problem is to determine whether(More)
Here we introduce a computer-based visual display program, called MAGE. MAGE was designed to display molecules but we will explore its potential for application to the study of social networks. To do so, we will use MAGE to examine the structural properties of two data sets, friendship choices in an Australian college residence and peer choices among(More)
Although they might not agree with the precise terms of Moreno’s statement, most contemporary structural analysts would still subscribe to the view that visual images continue to play a key role in both exploring and presenting the patterns displayed by structural data. Among the many kinds of structural patterns that have been explored and presented(More)