Dominating sets and ego-centered decompositions in social networks

Our aim here is to address the problem of decomposing a whole network into a minimal number of ego-centered subnetworks. For this purpose, the network egos are picked out as the members of a minimum dominating set of the network. However, to find such an efficient dominating ego-centered construction, we need to be able to detect all the minimum dominating sets and to compare all the corresponding dominating ego-centered decompositions of the network. To find all the minimum dominating sets of the network, we are developing a computational heuristic, which is based on the partition of the set of nodes of a graph into three subsets, the always dominant vertices, the possible dominant vertices and the never dominant vertices, when the domination number of the network is known. To compare the ensuing dominating ego-centered decompositions of the network, we are introducing a number of structural measures that count the number of nodes and links inside and across the ego-centered subnetworks. Furthermore, we are applying the techniques of graph domination and ego=centered decomposition for six empirical social networks.Comment: 17 pages, 7 figure

Social practices and mobilisations of kinship: an introduction

International audienceThis academic investigation into the issue of kinship is the result of several workshops entitled ‘Running risks in the family: kinship put to the test of economics and politics, from Iran to the Balkans’, that were held on February 2004, 13th (Aix-en-Provence), and May 2004, 7-8th (Istanbul). These meetings were organised by the Institut d’ethnologie méditerranéenne et comparative (IDEMEC) [Institute of Comparative and Mediterranean Ethnology] and the Institut Français d’Etudes Anatoliennes (IFEA) [French Institute of Anatolian Studies]. They were coordinated by Gilles De Rapper and Benoit Fliche

Progresses and Challenges in Link Prediction

Link prediction is a paradigmatic problem in network science, which aims at estimating the existence likelihoods of nonobserved links, based on known topology. After a brief introduction of the standard problem and metrics of link prediction, this Perspective will summarize representative progresses about local similarity indices, link predictability, network embedding, matrix completion, ensemble learning and others, mainly extracted from thousands of related publications in the last decade. Finally, this Perspective will outline some long-standing challenges for future studies.Comment: 45 pages, 1 tabl

Women\u27s activism and social networks in post-genocide Rwanda.

Following the 1994 genocide the social networks of many Rwandan women changed. The loss of kin, particularly men, left many women needing new sources of social and material support. Beginning in the early 1990s the international development and aid community recognized the need to integrate gender analysis in their work and began to focus on women’s activism and efforts to improve the position of women in the supposed developing world. Using social network data and structured interview data gathered in Rwanda in June and July 2013 from 30 women, this study attempts to answer the question: Do women who were adults before the 1994 genocide rely more heavily on membership in women’s organizations for support than women who became adults after the genocide? The results of this study conclude, in addition to women’s organizations, religious affiliations account for a significant portion of support in the social networks of Rwandan women. Because support commonly comes from non-secular women’s organizations as well as mixed gender religious organizations international aid providers should reframe their provisions of aid to best serve both segments of society and any overlap

Divide et impera:Modeling the relationship between canonical and noncanonical authors in the early modern natural philosophy network

This article aims to study the relationship between today’s canonical and noncanonical authors in the domain of early modern natural philosophy through the lens of social network analysis. By studying a massive corpus of letters (Electronic Enlightenment pro-ject), we examine the structural relationship between several of today’s canonical authors in natural philosophy and noncanonical women philosophers operating in the same network. We demonstrate the structure of this network and its effects on noncanonical authors. By modeling the case of women philosophers, we show that our model can be used to identify further noncanonical authors who had similar profiles

Restoring Trust: The Role of HR in Corporate Governance

Theories of knowledge-based competition focus on internal resources as the source of value creation. The HR architecture (Lepak & Snell, 1999) brought human resource management directly into this forum by developing a model of human capital allocation and management. We attempt to extend the HR architecture by introducing a framework of relational archetypes—entrepreneurial and cooperative—that are derived from unique combinations of three dimensions (cognitive, structural, and affective) that characterize internal and external relationships of core knowledge employees. Entrepreneurial archetypes facilitate value creation from external partnerships while cooperative archetypes facilitate value creation from internal partnerships. This paper identifies how each of these archetypes is managed by a corresponding HR configuration and how they together contribute to value creation by facilitating organizational learning via exploration and exploitation

Posthumanist Rhetorical Agency

The postmodern criticism of humanist agency initiated by Dilip Gaonkar nearly twenty years ago set in motion a discipline wide discussion concerning the conceptualization rhetorical agency. Rhetorical agency is difficult but vital to conceptualize because the term bears directly on the discipline\u27s theorizing about the speaker or rhetor, the effect of the speaker or rhetor\u27s rhetoric on an audience, and the extent to which the speaker or rhetor\u27s agency is constrained by ideology and discourse. What emerged from this discussion about agency did distance the discipline from the humanist conceptualization of rhetorical agency that persisted at the time Gaonkar published his argument, but conceptualizing rhetorical agency remains an evolving endeavor. The postmodern critique created two interrelated problems for the conceptualization of rhetorical agency in the discipline. The first concerns the role of discourse in the formation of rhetorical agency; the second concerns the impact ideology has on the formation of rhetorical agency. The response to the critique often assumes postmodern philosophy maintains the subject or agent is determined by discourse, and second, that the philosophy suggests ideology is virtually totalizing for subjectivity. I believe no postmodern author actually maintains either of these positions. The conceptualization of rhetorical agency which emerges in the recuperative effort predicated upon these two phantom criticisms results in the rehabilitation of the humanist paradigm Gaonkar\u27s criticism suggests we reject. I argue we need not rehabilitate those aspects of agency postmodernism calls into question, but rather should direct our attention to the conceptualization of rhetorical agencies that Gaonkar presumes exist in discourse practices. Lacan\u27s theory of discourse corrects for these errors because it assumes there are four discrete manifestations of rhetorical agency in discourse. The psychoanalytic terminology Lacan provides compliments the study of rhetoric not only because rhetoric was central to Lacan\u27s thinking, but also because his theory provides a model for isolating and explaining rhetorical agency in discourse practices