par Gagliolo, Matteo
Référence Belgian Network Research Meeting (BENet) (4: 2014-10-03: ULB, Brussels)
Publication Non publié, 2014-10-03
Communication à un colloque
Résumé : The presence of a well connected civic elite, linking the differentorganizations expressed by an ethnic community, is considered animportant determinant of the political participation and trust ofminority groups [Fennema & Tillie, 2008]. Previous quantitative workon this topic has been limited to simple structural measures onone-mode projections on the organization mode [Fennema & Tillie,1999, 2001, 2008; Vermeulen & Berger, 2008]. We remark that theprojection introduces biases in some of the measures, increasing thenumber of ties in a combinatorial fashion, and propose instead astructural analysis of the unprocessed two-mode networks. Inspired byexisting measures of hierarchy in one-mode networks [Everett &Krackhardt, 2012], we consider different measures of clustering andredundancy that have been developed for two-mode data [Latapy et al,2008; Opsahl, 2013]: additionally, we look for correlations amongthese measures and node degrees, as in [Latapy et al, 2008]. Usingdata from [Vermeulen, Berger, 2008], on Amsterdam and Berlin, andadditional data on Brussels, we compare the association networksdeveloped by the Turkish and Moroccan communities in different hostcountries, characterized by different political opportunitystructures. We further discuss how the proposed measures can be usedto identify the different structures described in previous work based onone-mode projections, such as umbrella organizations and cliques.